ER11 vs ER20 Collets: Compatibility Guide
Identify the ER series, collet range and tool shank, then assemble and verify the setup without confusing ER11 and ER20.
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Technical library
Technical guides
Tool selection, starting settings, cutting diagnostics and safety precautions.
Sandpaper Grit Chart: Which Grit to Use?
Choose sandpaper grit by material, defect, machine and finish, then build a progression that removes rather than hides scratches.
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Which Router Bit for Plywood?
Choose the right router bit for plywood. Compare upcut, downcut and compression bits for clean edges, chip removal, CNC and handheld routing.
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Types of milling cutters for metal
Compare square, ball-nose, corner-radius, face, side-and-face, T-slot and Woodruff cutters by operation and material.
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Types of Router Bits for Wood
Compare straight, flush-trim, edge-forming, joinery, dovetail and surfacing router bits by machine, material and cut type.
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Choosing a drill bit by material
Compare bits for wood, metal, sheet, plastic, tile and concrete, then verify chuck, mode, speed and drilling depth.
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How many teeth for a circular-saw blade?
Choose tooth count by diameter, material, cut direction, machine and finish, then verify mounting and maximum RPM.
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Which angle grinder disc for stainless steel?
Choose between cutting, grinding, flap and finishing discs, then verify diameter, mounting, guard and maximum RPM.
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Speeds and feeds: a conservative beginner method
Calculate chip load, feed and RPM from manufacturer data, then validate engagement, evacuation and toolpath.
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Why does a CNC router burn wood?
Diagnose CNC burn marks through chip load, cutter condition, runout, evacuation, engagement and toolpath behaviour.
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Choosing a router bit for acrylic
Choose an O-flute, control chips and heat, then validate feed, RPM, workholding and toolpath on matching scrap.
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Upcut, downcut or compression: how to choose
Compare upcut, downcut and compression bits by chip evacuation, visible face, cutting depth, material and machine.
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