Sainsmart ProverXL 4030 Drag Knife Holder
thingiverse
Sainsmart ProverXL 4030 Drag Knife Holder Designed to work with the Roland style drag knives you can buy cheaply on aliexpress etc Needs two rubber bands to pull the knife down (to cope with uneven surfaces) Knife hole is deliberately slightly tight - heat the knife (I used a kitchen gas burner) and push it into place to enlarge the hole just enough. Should work with any CNC where you can mount using M5 at 40mm apart. The FreeCAD file is included and is fully parametric (see sheet) so you can easily adjust as required - though FreeCAD seems to be leaving edges open so the STLs enclosed have been fixed in 3D Builder.
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