Micro drilling pdf In this research, a CO 2 laser machine was employed for micro-drilling PC samples. Figures 16 and 17 shows the effect of ECDM on ceramic coating and Nickel (Ni) substrate The document discusses Soilmec's equipment for microdrilling applications such as micropiles and anchoring. Specifically, it provides details on the PSM-8, PSM-8G, and PSM-16G models, including their torque, rotary stroke, power, weight Jul 1, 2021 · The roundness of the thirtieth hole drilled by centering micro-drill is 1. Dec 9, 2017 · PDF | The demand for high aspect ratio micro holes is growing day by day. Srinivas1, S. Keywords Micro drills · Drill design · Tool wear · Drill breakage 1 Introduction With the development of science and technology, the demand for micro-miniature parts and devices in various elds of industry continues to increase. In this paper, a new method is proposed to achieve effective micro-drilling, under the name of counter resistant micro-hole Hole numbers represent drill wear stages well. However, experiments show that gravity-feed set-up may lead to many issues that lower the repeatability of machining. An electrochemical micro machining (ECMM) setup has been developed and utilized for experimental investigation. 0 mm drill sizes were performed by changing the spindle speed and feed at three different levels. This study focuses on mechanically drilled micro-holes in Inconel 718 alloy. doc / . Feb 1, 2020 · Request PDF | Micro drilling of glass fibre reinforced polymer composites | In today’s scenario, Glass Fibre Reinforced Polymer Composites are one of the most fascinating and lucrative among the Aug 10, 2017 · The major difference between macro and micro electro discharge machining is well defined by the plasma size[3]. View The measured mean values of the feed force are higher in micro drilling in the normalized steel AISI, compared to the full-annealed steel, due to the difference in its strength, as seen in Fig. A new tool was used for each test. The functionality of a product depends on details like the precision with which micro-features are fabricated, including their dimensions, surface polish, profile, and so on. 2010. , propose a technique to provide objective pass-fail data on the condition of in-situ but suspect structural wood using micro drilling to examine wood density. For most metals, typical spindle speeds are in the 2000 to 4000 rpm range and feeds are in the range of a micrometer per revolution, or so. However, because the materials and micro drilling process of high-frequency and high-speed PCB are very different from the traditional printed board, there are still many of key Jun 9, 2021 · Micro-drilling devices with different blade shapes were fabricated with a rapid and facile manufacturing process using three-dimensional (3D) printing technology. Mechanical drilling restricts the choice of hole shape for developers to round ones. M. Drill fractures are frequently found in the micro drilling process Solid Carbide Micro Drill : ~5-8d Drilling depth: T313: INDrill+ Longer flute length series: 0. The demand for micro drilling with a diameter in a range of a few microns to several hundred microns is increasing in In laser drilling the combination of the pulse peak power and duration significantly influences the material removal mechanism. A math-ematical model for this new micro-drill point has been established. In addition, the method allows the expert to find invisible beams below floor and inspect hidden timber (Rinn, 1989a). Specific normal force and specific friction force coefficients have been determined Soilmec_Micro Drilling Rig_SM-14 - Free download as PDF File (. But mechani - cal drilling is no longer precise enough which enables the generation of finer lateral structures. In particular, | Find, read and cite all the research you . 1 mm. 1 - Ø3. 7–29. Moon and Minh-Quan Pham and Gyu-Bong Lee and Yu-Chu Huang and Barbara S. S. The melody is represented by the position of Jan 12, 2015 · The article describes fabrication of an experimental setup which could be used for electrochemical drilling process to produce micro-holes in a copper workpiece with its different variants, namely Keywords: Laser Micro-Drilling; Mechanical Micro-Drilling; Aerospace Applications. Experiment was conducted on FR-2 as a work piece material using carbide drill having 0. When used with a variety of cutting accessories, the RemB Electric Micro Drill is intended for surgical procedures involving the drilling of bone and hard tissue, including the spine. 00mm: Solid Carbide Micro Drill : ~8-12d Drilling depth: T301: INDrill Short flute length series: 0. µ wire EDM, µ-die sinking,µ-milling and drilling are the different varieties of micro EDM with respect to tool and tool kinetics[4]. , 2005) industries can be found. Oct 30, 2020 · Download full-text PDF Read full-text. The evaluation of the hardness is related to the drilling penetration force: the force necessary to drill a hole with specific operative conditions such as the Penetration Rate (PR) and the Rotational Speed (RS), which remain constant during the Jul 1, 2018 · Nowadays, gravity-feed drilling is the most commonly used method for micro hole drilling with ECDM. The proposed model considers three different cutting regions, i. Jan 1, 2016 · PDF | Normally, breakage is the main cause of failure of a micro drilling system, of which coupling effect of lateral and torsional displacements plays | Find, read and cite all the research Apr 23, 2016 · This paper presents a mechanistic model for micro-drilling cutting forces that includes the cutting edge radius and the minimum chip thickness size effects. pt Sílvia R. pdf), Text File (. Oct 24, 2023 · PDF | Laser micro-drilling is a significant manufacturing method used to drill precise microscopic holes into metals. Micro-drill geometry | Find, read and cite all the research you The research deals with the development of micro compound tool consisting of a micro flat drill as a drilling part and a micro electroplated diamond grinding part for finishing. Cutting with the laser allows any shape to be cut out, for example, for adaptations or structural cutouts. 5 mm to 1. Finally, a summary of micro drill design and existing problems and challenges is proposed. To seize this market opportunity, micro drill bit manufacturers, especially in Asia, are expanding their production capacity. The drilling time varies for each material and geometry. This enables the laser to be used for high precision drilling and cutting and micro turning processes. 1. The | Find, read and cite all the research Jun 1, 2004 · The current paper investigates responses such as drilling rate (DR) and tool wear rate (TWR) experimentally for Electric discharge machining (EDM) during micro-hole drilling on titanium alloy with Jul 19, 2022 · PDF | Micro-drilling resistance method is a widely used tree ring micro-destructive detection technology. This is a rhyme designed to work over the melody of the French nursery rhyme Frère Jacques. It is a sensitive, reliable and micro destructive technique in which a thin drill (3-5 mm) is used. 5 mm resulted in a hole with high accuracy, good Jun 2, 2023 · Request PDF | A Review on Micro-drilling by Electrochemical Discharge Machining | The electrochemical discharge machining (ECDM) process is a hybrid of electric discharge machining and Apr 1, 2022 · The process can be conveniently used for micro drilling operations on aerospace jet engine parts. 03. Higher feed and lower cutting speed values improve tool life. Transitioning seamlessly from laser drilling, the experimentation advances into the realm of mechanical micro-drilling a critical component in the broader exploration of micro-machining capabilities for aerospace applications. Introduction. quality of micro-drilling, and prolong the service life of the micro-drill,theoptimaldesignofmicro-drillpointneedstobe carried out. MIRACLE coating "VP" ensures long tool life. Pereira Mar 17, 2023 · PDF | In order to improve the tool life and micro-hole machining quality, the H-shaped chisel edge micro-drill (HCE-MD) was developed in this paper. 1016/J. The micro-hole drilling processing using nanosecond pulses usually produces holes in metal with acceptable quality, but in general, worse than those by an EDM process because of melting [4]. , 2022) and electronic (Liu et al. This uses a special drill geometry, tool holding devices, drilling cycle and speeds of drilling. Micro drill life which is normally | Find, read and cite all the research you Triangular pyramid shape helps drill a high precision guide hole. Mar 3, 2017 · In the present work, micro-drilling is carried out using 0. The high-quality photonic nanojet is produced using the microcone-shaped probe tip, which is fabricated by the Successful micro drilling requires a sensitive machine with a precise spindle and low runout. 0 mm drill sizes were performed by Conventional micro drilling makes use of drill bits of different configurations such as twist, spade, D-shaped, single flute, compound drill and coated micro drill, while non-conventional micro drilling involves electrical, chemical, mechanical and thermal means which include laser, EDM, ECM, SACE, electron beam, ultrasonic vibration or Oct 1, 2017 · In this paper all the available micro drilling technologies are reviewed. , ploughing-dominant, transition, and shearing-dominant, based on these size effects. CIRP. CoCrMo is regarded as one of the advanced materials which are currently garnering popularity in both engineering and medical applications. reviewed. With drills of this size, close attention must be paid to the appearance of wear indicators. Sequential Laser and EDM Micro-drilling for Next Generation Fuel Injection Nozzle Manufacture Lin Li (2)1, C. However, this material May 3, 2016 · Request full-text PDF. Micro-drilling experiences an early tool damage which is a major drawback for nickel-based superalloy. Design–Expert analysis was applied to understand the laser drilling process better. Micro drilling using micro drill bits possesses the same features as that of the macro scale drilling but slightly different ones. A triaxial accelerometer and a Kistler Minidyn 9256C2 dynamometer (Aachen, Germany) were used to record the vibration signal, force signal and torque signal. The demand for micro drilling with a diameter in a range of a few microns to several hundred microns is increasing in industries such as electronics, aerospace, medicine and automobiles, due to a significant uptake in the use of miniaturised products and devices. Keywords Micro-drilling, metal matrix composites, micro-machinability, nano-reinforcements, cutting force, size effect, chip formation, burrs Date received: 5 February 2019; accepted: 24 April 2020 Introduction Magnesium (Mg), as the sixth abundant The work describes the development of the process to drill the micro-hole with jet-electrochemical machining (JetECM) method assisted with air. Giedl-Wagner3, H. Micro drill bits of diameter larger than 50 Analysing unconventional drilling technologies, we found that laser micro-drilling is most used for processing parts with complex, hard and difficult to drill by other methods, such as ceramics, glass and composite materials. Jun 2, 2023 · Alternately, the use of drill bit as a tool electrode provides better electrolyte circulation than a cylindrical tool electrode . It will first provide a chronological description of micro drill evolution and then explain the fundamental concepts of micro drilling, thus clarifying the ambiguity regarding the definition of micro drilling by providing a general definition, geometrical attributes of a micro drill, advancements in materials used for Jul 1, 2021 · PDF | On Jul 1, 2021, Ui Seok Lee and others published Micro Drilling of Single Crystal SiC Using Polycrystalline Diamond Tool | Find, read and cite all the research you need on ResearchGate micro drilling down to . The Mikron HSM-400 machining center takes center stage, orchestrating the mechanical micro-drilling tests precisely. Along with high precision it is also preferred for high spindle speed application to improve productivity and quality. Okasha and Paul Tarisai Mativenga and N. 10-3. Optimization of PC micro-drilling using a Mechanical micro-drilling of Nimonic 80A superalloy using uncoated and TiAlN coated micro-drills Niharika Swain1, Praveen Kumar1, G. R. It is used for the purpose increasing quality of special parts and items. Jul 11, 2019 · Micro-drilling performance is assessed in terms of drilling thrust at different material layer with hole depth, taper of hole and distribution of thrust along the cutting edge of drill. Dec 31, 2016 · Due to the Fig. Using the experimental data, a predictive model was establish for the EDD process for micro drilling in ZM21 Mg-alloy. 2 DRILLING FROM SOLID | Tools for micro drilling MICRO-Drill-Steel Drilling diameters from one millimetre with internal cooling Whether in the machining of injection nozzles for vehicles or in the production of moulds for the smallest injection moulding components – machining in the micro range is used in many applications. The primary cutting edge of the micro-drills also appears to have been chipped and For getting holes below 1mm Micro Drilling process which is high precision process are preferred. This includes but is Aug 30, 2024 · For each a-C:H film micro-drill, Fig. Linke Jan 28, 2021 · Electrochemical discharge machining (ECDM) is a non-traditional machining technology used for micromachining of non-conductive materials including glass and ceramics. 5 mm, as defined by Siphinx—swiss microtool manufacturer [58]. 08 by planar micro-drill; the centering micro-drill has better position accuracy than planar micro-drill Jan 1, 2019 · Micro holes with high aspect ratio in high strength materials are difficult to produce using mechanical micro drilling because of high tool wear, frequent tool breakage and deterioration of hole Aug 1, 2022 · The input parameters of EDD process were investigated for DR, TWR and HO in micro drilling of ZM21 Mg-alloy. Experienced users are able to identify decay, insect damage, and cracks in the profile. Optimum parameters should be adjusted for each case. Apr 20, 2009 · First, let’s try to define micro-drilling. docx), PDF File (. Atkinson1, R. 14 shows the wear morphology of the micro-drill bits after drilling different numbers of holes. 02, and it is 1. Micro Drilling Operations . pt Ana Sofia Leal Laboratório Nacional de Engenharia Civil, Lisbon, Portugal, João Manuel Mimoso Laboratório Nacional de Engenharia Civil, Lisbon, Portugal, jmimoso@lnec. As seen in Fig. J. Like so much metalworking vocabulary, hard and fast definitions are often elusive. mukorossi seeds, a feed rate of 0. 0015" diameter. 0. The study focuses on the fabrication method of these micro compound tools and their application in making and finishing holes into stainless steel (SUS304). 03 mm/r, a drilling speed of 6 m/min, and a drill-bit diameter of 0. Micro-drilling of ceramic-coated Ni-superalloy was successfully conducted using tungsten carbide as a tool electrode. It is also used for the Micro-drilling is a complex mechanical machining process. 2 mm or less in diameter and a super-high-speed spindle of 160000 rpm or more has been developed for drilling ultra-micro holes in printed wiring Aug 10, 2017 · Micro drilling is not generally a high speed process since dwelling of the drill at the bottom of the hole can cause hardening of the work piece leading to increased drilling forces. Prediction of hole number gives tool wear status of the micro-drill. 2013. substrate with thousands of micro drill-holes. txt) or read online for free. Sidpara and others published Micro EDM Drilling | Find, read and cite all the research you need on ResearchGate EDM is also used in micro-machining field for application like micro-drilling or micro-milling. Driver and Lin Li}, journal={Cirp Annals-manufacturing Technology Dec 1, 2024 · The depth of cut (4 mm) was determined considering the micro-drilling operations with a high-aspect ratio performed for titanium products such as Ti6Al4V dental pin [29]. Use of air along with the jet-improves the Currently, electrical discharge machining (EDM) is the established industrial process for micro drilling; however, mechanical micro-machining is being considered for improved surface integrity and geometrical definition. Download full-text PDF PCB, requires being much smaller, even down to 0. Larger holes are cut as circles, making any hole diameter possible. 011 Corpus ID: 55920900; Sequential laser and mechanical micro-drilling of Ni superalloy for aerospace application @article{Okasha2010SequentialLA, title={Sequential laser and mechanical micro-drilling of Ni superalloy for aerospace application}, author={M. 010 Corpus ID: 110798882; Development of a micro-drilling burr-control chart for PCB drilling @article{Bhandari2014DevelopmentOA, title={Development of a micro-drilling burr-control chart for PCB drilling}, author={Binayak Bhandari and Young-Sun Hong and Hae-Sung Yoon and J. Based on a Box–Behnken design (BBD) of Worldwide micro drill bit consumption is over 1 billion pieces in year 2006 and this number will increase further. Precision production processes in industries are trending toward the use of smaller holes with higher aspect ratios, and higher speed operation for micro hole drilling . It describes Soilmec's line of hydraulic drill rigs from 8-33 tons that are suited for microdrilling at various angles using different drilling technologies. Jan 1, 2005 · PDF | This paper examines the influence of various factors onto the final accuracy in EDM (Electro Discharge Machining) micro drilling. 5 mm diameter drill on Al 6061-T6 sheet of 3 mm thickness. 05–2. 14, the chisel edge wear area of each micro-drill bits increases significantly with the number of holes drilled. 3 EDM micro-drilling EDM micro-drilling is a complex process that is performed by the simultaneous action of See full list on link. The RemB Electric Micro Drill is intended for use with the Consolidated Operating Room Equipment (CORE™) System. Quality inspection of micro-holes | Find, read and cite all the research DOI: 10. Drilling Microvias At present the minimum achievable drilled hole diameter is 30 μm. This paper examines the wear condition on the micro-tool cutting edge, surface roughness Materials and Method Micro-drilling experiments were conducted on CNC micro machining centre (Model DT110, Mikrotools Pte Ltd, Singapore) as shown in Figure 1. Sep 29, 2018 · The high-frequency and high-speed printed circuit board (PCB) with lower transmission loss, higher heat resistance, and better processability play increasing significant roles in mobile communication technology. The Mar 2, 2020 · GFH GmbH has developed a helical drilling optics, which rotates the beam up to 30. com Jun 1, 2020 · A drilling technique using micro-drills of 0. Similar to conventional machining the feed force of micro drilling decreases with a reduction of the uncut chip thickness. All these problems are mainly due to the bubble accumulation on Jan 1, 2021 · This paper explains the synthesis of flexural spindle head used for micro drilling is in the PLM platform. Oct 17, 2023 · PDF | To improve the estimation accuracy of wood density and study the linear correlation between drill feed resistance and wood density, a new micro | Find, read and cite all the research you Mar 1, 2021 · Request PDF | Machining performance enhancement of deep micro drilling using electrochemical discharge machining under magnetohydrodynamic effect | Electrochemical discharge machining (ECDM) is a DOI: 10. Jul 30, 2019 · PDF | Drilling is one of the material removal process and recently the working scale has entered the micro level. The same Starting Drill can be used for dual purposes. Those drill holes must securely and precisely position the probe card’s contact pins to establish accurate con-tact with the connectors of the semicon - ductor chip being tested. The distance between the micro drill bit and tool holder was set to 10 mm under all conditions. , 2006; Nakakita et al. The experiments were planned according to the face central composite design (FCCD) based on RSM. Costa Laboratório Nacional de Engenharia Civil, Lisbon, Portugal, drcosta@lnec. In this paper, a new micro-drill point geometry, termed the centering micro-drill point, is developed. 000 rpm and allows furthermore to adjust the diameter and the incidence angle. 19. Drilling specialists generally use the term "micro drilling" to describe the drilling of holes smaller than 3 mm in diameter. 30-3. Laser drilling on polymers has many applications in various industries, such as sensors, aerospace, medical devices, and microelectronics. The experimental set up has been fabricated and the effects of air pressure along with the other process parameters has been investigated experimentally on the process responses namely MRR and hole taper. 9 or 1. Apr 1, 2022 · Request PDF | A process modeling approach for micro drilling of aerospace alloys with a waterjet guided laser system | Laser drilling is a preferred method to make cooling holes on gas turbine parts. Burley says Sphinx defines micro-drilling with a starting Micro-drilling in class Let’s see how micro-drilling can be incorporated into a lesson activity. The different experiments have been carried out to investigate the influence of the electrochemical machining Micro-drillng test methods for determining the soundness of wood structural members: Probett et als. 07. The 3D-printed casting mold was Jun 5, 2023 · Interestingly, for the drilling of S. 1 mm or less. Barshilia1 Nanomaterials Research Laboratory, Surface Engineering Division, CSIR – National Aerospace Laboratories, Bangalore, India, 2Aircraft Prototype Manufacturing Facility, CSIR – National Aerospace Laboratories Micro Drilling - Free download as Word Doc (. In micro wire EDM the electrode used is either tungsten or copper wire of diameter 25-300µm that Oct 21, 2024 · This paper presents the evaluation and observation of the drillability characteristics of cobalt chromium molybdenum (CoCrMo) produced through 3 dimensional (3D) Additive Manufacturing technologies named Selective Laser Sintering. By way of an example, let’s say we are working with Fruit Rhyme (figure 2). Jan 1, 2021 · Request PDF | Optimization of Micro Drilling Process | Mechanical micro-drilling is one of the most widely used methods among several micro-hole making methods because of its least dependency on Laser drilling on polymers has many applications in various industries, such as sensors, aerospace, medical devices, and microelectronics. Micro drilling experiment with 0. To solve the problem that the detection signal | Find, read and cite all the research Jun 29, 2017 · PDF | During the micro-drilling process of stainless steel, the wear, fracture, and breakage of the micro-drill easily occur. e. To read the full-text of this research, you can request a copy directly from the authors. It will first provide a chronological description of micro drill evolution and then explain the fundamental concepts of micro drilling, thus clarifying the ambiguity regarding the definition of micro drilling by providing a general definition, geometrical attributes of a micro drill, advancements in materials used for Aug 20, 2019 · Request PDF | On Aug 20, 2019, Ajay M. In this work, a study on optimum drilling parameter for HSS drilling tool in micro-drilling processes in order to find the best drilling parameter for brass as a workpiece material. However, deep micro hole drilling (usually more than 500 μm) always encounters many problems, such as low repeatability, tool bending, and low machining efficiency. 2. Oct 1, 2017 · In this paper all the available micro drilling technologies are reviewed. 00mm: Solid Carbide Micro Drill : ~5 Aug 2, 2021 · Request PDF | On Aug 2, 2021, Guangjun Chen and others published Dynamic chip formation of ultrasonic-assisted micro-drilling on AISI 4340 steel | Find, read and cite all the research you need on Feb 1, 2023 · PDF | On Feb 1, 2023, Norbert Geier and others published A critical review on mechanical micro-drilling of glass and carbon fibre reinforced polymer (GFRP and CFRP) composites | Find, read and Jan 1, 2017 · Request PDF | Micro drilling of hard-to-cut materials: An experimental analysis | The introduction of machine tools specifically designed and industrialised for micro cutting processes, the Dec 24, 2024 · An important application consists of micro-EDM, particularly micro-EDM drilling, which is widely used in the automotive, aerospace and medical sectors to realise micro- Dec 1, 2018 · Request PDF | Laser Beam Micro Drilling – a Review | The recent advances in the manufacturing technology have led to the development of miniature products in the field of automobile, biomedical Dec 1, 2024 · Micro-drilling is a process that helps in creating holes in the range of diameter 0. 00mm: Solid Carbide Micro Drill : ~3-5d Drilling depth: T302: INDrill Medium flute length series: 0. Scribd is the world's largest social reading and publishing site. Drilling a center hole and drilling 90° cutting angle. 7 mm diameter. Diver2, J. Micro drilling using micro drill bits . The aerospace sector has traditionally employed electrical discharge machining (EDM) and laser drilling techniques to create effusion cooling holes in components such as nozzle guide vanes, micro-channel heat exchange, and turbine blades as shown In the research an attempt has been made to explore the feasibility of the application of electrochemical machining technique to make micro drill hole on Al/10vol%Al2O3-MMC. However, more research on the process is required to understand the effects of the variables on material removal rate. Artificial neural network accurately predicts hole number from The minimum chip thickness of Mg/SiO2 metal matrix composites was determined to be 1. PRECISIONENG. 1. (a) Burr formation in micro-milling of AMed Ti6Al4V [124], (b) chip morphology in micro-cutting of different workpiece materials [125], (c) the hole quality when drilling Oct 19, 2022 · The ROP of the drill bit increased by 20. 5%. May 6, 2020 · Request PDF | Micro-drilling of straight and inclined holes on thermal barrier coated Inconel 718 for turbine blade cooling | Thermal barrier coatings (TBC) are widely used on turbine blades Apr 1, 2022 · The electrical discharge micro-drilling (EDMD) can be projected as an economical manufacturing route for generating micro-perforation or porous architecture in Mg alloys. 8%, and the drilling depth increased by 7. springer. 1–25. pdf) or read online for free. It is therefore feasible to apply 3D printing to the manufacture of petroleum drill bits. Ravishankar2, Harish C. The same Starting Drill can be used to drill a center hole of Ø0. Really cost-effective. Meanwhile, micro drill bit manufactures have to face more challenges than ever before. In this study, we propose a photonic nanojet-based direct micro-drilling technique for polymer material with low-cost and low-power continuous-wave laser. The systematic procedure is adopted for validating the machine tool design in PLM Oct 1, 2019 · Conventional micro drilling makes use of drill bits of different configurations such as twist, spade, D-shaped, single flute, compound drill and coated micro drill, while non-conventional micro Since 1987, recording resistance drilling using thin needles is applied by experts for determining the condition of structural timber and joints by measuring density profiles of wood. Micro-drills were fabricated on a Oct 1, 2017 · In recent years, micro-hole drilling with a diameter of less than 1 mm has been widely applied in electronic information, semiconductor, metal processing, and other fields. , 1994), aerospace, biomedical (Davis et al. FR-2 sheet with copper foil lamination on one or both sides is widely used Dec 11, 2024 · Photonic nanojet can serve as a powerful tool for direct laser micro-machining based on a non-resonance focusing phenomenon. Helml3 1 School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, UK 2 DELPHI Technical Centre Gillingham, Kent, UK 3 GFH-mbH, Deggendorf, Germany Abstract High quality holes of diameters less than 145 µm are Micro-drilling studies in azulejo consolidation Dória M. The measurement results obtained from multi-component dynamometer are Oct 31, 2022 · PDF | Laser drilling on polymers has many applications in various industries, such as sensors, aerospace, medical devices, and microelectronics. , 2022; Das et al. Journal of Manufacturing Processes, 2017. However, Jack Burley, president/COO at Big Daishowa, a distributor for Swiss micro-drill maker Sphinx’s product line, defines micro-drilling with a number. As far as micro-EDM drilling, applications in automotive (Li et al. drilling of a wide range of materials, including machinable ceramics (Macor® and Photoveel®), copper, brass, plastics, engineering grade plastics (such as Torlon®, Vespel® and Peek), ceramic-filled plastics, Delryn®, Lexan, Polyimides, Nylon, medical grade stainless and more. pvqykxqdemorojkwcjujdnbflasxciixnuuiwmjmwwmpuwynlh