Spot weld tip shaper

Machined from 22mm o/d silver steel. Top side.
knoba - spot weld tip shaper

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Underside.
knoba - spot weld tip shaper

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Dremeled with diamond burrs.
knoba - spot weld tip shaper

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Held at cherry for 6 to 7 mins.
knoba - spot weld tip shaper

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The gauze, I was trialling, was only good for tempering.
knoba - spot weld tip shaper

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Quenched, here.
knoba - spot weld tip shaper

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Made to fit a thread die holder.
knoba - spot weld tip shaper

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Finished piece. Can be sharpened on either side of cutting edge.
knoba - spot weld tip shaper

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Link to CAD file below.
knoba - spot weld tip shaper

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knoba – spot weld tip shaper – 2018.dxf

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Not bosch’s HSS twist drill bits for plastic

knoba - not boschs hss twist drill bits for plastic

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Tip angle 60°, flat 4° rake, clearance angle 12°
knoba - not boschs hss twist drill bits for plastic

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Plier Rack

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The Plastics Distributor and Fabricator – Drill Grind Geometry

knoba – Plier Rack

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