Thumb wheel jig

Jig & threaded blank
knoba - thumb wheel jig

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Freshly machined thumb wheel blank
knoba - thumb wheel jig

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knoba - thumb wheel jig

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Screw blank on underside of jig, locknut it, drill through one hole, use lock pin (silver coloured part), drill through other holes, deburr, fettle & smooth thumb wheel.
knoba - thumb wheel jig

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Nice!
knoba - thumb wheel jig

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knoba - thumb wheel jig

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What’s in the CAD file…
knoba - thumb wheel jig

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Materials:
1 x 60x60x16 mild steel plate
1 x M12x80mm bzp bolt
1 x M6x40mm 12.9ht Socket cap bolt
1 x m6 washer
1 x m6 nut

1 x 13mmx32mm o/d, m6 threaded, 6 series Aluminium blank

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knoba – thumb wheel jig – 2018.dxf

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