Hi All,

Not sure if this is the right place to post this but I'll give it a go.

I do a lot of work in Balsa, Spruce and Cyparis, occaisionally ash too.

I needed to sand them accurately to a thickness, and later make a jig so I can make taper sections.

So what follows is a collection of 12mm birch ply, 8mm stainless threaded rod, a 1/4HP motor (thanks Maurice!) belts, toothed pullies and so on.

Here goes!

12mm ply discs cut and sanded approximately round:-

Shaft bearings:-

All clamped up!

Main box, lacquered:-

Turning the drum round: –

Machining up some brass bushes: –

Table pivots, fully adjustable:-

This shot is sideways, but shows the main leadscrew of 8mm stainless, tothed pully and brass bush, soldered to a strip of 3mm mild steel. There are locknuts either end, adjustable for backlash, of which there isn't any !

The threaded rod on the right is turns via a handwheel. A toothed belt arrangement turns the rod on the left and the table rises and falls uniformly. All rods are 8mm ball raced:-

Here's the test pass…baby's bum smooth! The top does have a dust extraction point, too.

One thing – I've wound the sanding strip (25mm wide) on and secured it either end via screws – not ideal – anyone have any recommendations?

Thanks

Steve

Edited By Stevo on 25/05/2014 18:23:39

Edited By Stevo on 25/05/2014 18:27:01

Surface grinder for balsa..

now that did make laugh!!!