Intarsia-sized sanding station

[Scrollerman]

Thanks Col.
You've certainly whet my appetite as it's an interesting tool that I know little about.
Looking forward to your next posts with great anticipation !

 

[Claymore]

.......

 

[Walney Col]

Wow. They certainly know how to charge for those tiny CNC don't they. I wouldn't mind betting the explosion in 3D printing had knocked the bottom right out of their market. Georgous little things though, I'd love to have a go on one. I used to program CNC machines 30 years ago and still have odd bits of G code rattling around in my head.

Col.

 

[Walney Col]

Been working on the little belt sander again today whittling a piece of wood to act as the belt sander roller adjustment.

The belt will be tensioned with a small compression spring allowing instant belt changes and self-tensioning in case the belt stretches with use.

 

[Walney Col]

The belt sanding option shown in the last post is now running well.

[youtube]qyW-V0PKTFQ[/youtube]

 

[Samfire]

A neat little machine, I am impressed.

 

[Scrollerman]

That's a good update Col and it looks to work well.
I really do admire your experimentation and ability to make an idea into a working tool ! =D>

 

[Walney Col]

The Tiny Triple Sanding Station is now complete.

I have to say that the 240 grit sanding dome is absolute rubbish. It may be ok for sanding your nails (at a push) but I was hoping it would be able to dish out small hardwood parts and it hasn't got a cat in hell's chance of doing that. It does however only attach with an M6 screw directly into the end of the shaft so replacing it with some other means of dishing out should be easy enough and there are plenty of other options to choose from.

I've been asked exactly how I made the belt sander rollers. The top roller (shown above) is nothing more than a couple of 8mm ID ball races super-glued onto an 8mm harwood dowel. A standard 8mm ID bearing just happens to be 5mm wide and the belt is 10mm hence the need for two. The bottom roller (shown below) is a 10mm long piece of 18mm hardwood dowel with a 10mm hole through it in which site a couple of 4mm ID flange bearings. This roller was crowned slightly before I parted it it off to provide the belt with a means of self-aligning itself correctly. The choice of flange bearings was simply because I already had some and they too are held onto the wooden roller with super glue. The drive roller is yet another short length of 18mm hardwood dowel drilled to fit the motor shaft and held in place on it with nothing more glamorous than contact adhesive. At 60W it's a very low power application and it appears to hold just fine.

That's about all I can think to say about it so I'll shut up now.

The latest video:-

https://www.youtube.com/watch?v=V_T8Gpc6nxc