Table inserts to replace the plastic ones (hole between sandpaper & table)
~§~
Machined table inserts (made with holesaws & angle grinder), from plate
~§~
Pickling overnight in sulphuric acid to remove mill-scale from hot-rolled steel
~§~
The drop on this aperture is 3.5mm, my plate (same as the plastic inserts) is 3mm…
~§~
After pickling they are desmutted with detergent & a pan scourer
~§~
What’s in the CAD file
~§~
Printed 1:1, they make great stick on templates for more machining
~§~
Making a shim to fit into the aperture
~§~
Welding magnets placed on top
~§~
Thin bead of silicon sealer
~§~
Drop in shim
~§~
Drop in large table insert
~§~
Place magnets over hole & leave for 48 hours
~§~
Templates stuck, centre punched, pilot drilled & cleaned
~§~
Increased hole size to 6mm (1/4″) and countersunk both sides
~§~
Perfect. No more misaligned levels when sanding.
~§~
Was going to install small magnets but the inserts are fine
~§~
Added a basket for the bits & pieces.
~§~
Materials: 6 x 100x100x3 mm (4"x4"x1/8") plate/sheet mild steel 1 x 100x100x0.25 mm (4"x4"x0.010") shim mild steel Silicon sealer
~§~
Triton tools – Bobbin sander Tsps-450
knoba – bobbin sander mods – 2018.dxf
•••