internal inertia sanders

**hughie** · 7th October 2018, 02:58 PM

I have for quite awhile been developing a simple effective sander based on the inertia principle and I have come up with this design as seen below. they are for sale at $85AUD as an introductory price plus postage. Overseas inquiries welcome, they will sent airmail.

Specs:
1. 50mm sanding head running on two skateboard bearings
2. Articulated head allowing for even the most pronounced rim or lip
3. Lock in place by high tensile m4 Allen cap screws including Allen key or wrench
4. 12.7mm or .5" 4140 high tensile shaft 350mm long
5. 300mm x 30mm dia handle with a rippled plastic coating to ensure a quality grip.

The reach inside is around 300mm more if the handle can be inserted. Should this be too short a longer shaft can be used, especially when made from 4140. If the sanding head diameter is too large for what you turn it can be readily reduced by using your grinder. Just simply hold it against the grinding wheel and reduce to your preferred size.

Although I would not recommend going below 30mm diameter as the heat build up in the sanding process cant really be dissipated. Resulting in a break down of the sanding head , sand paper and Velcro separate and at extreme times the foam will break down as well.

I have a limited number available as my supplier of locking knobs as a further order that has yet to arrive.

**Neil T** · 7th October 2018, 04:31 PM

I am not a turner myself but congrats on the R&D put in here, I wish you all the best with the idea.

Neil

**Pat** · 7th October 2018, 05:02 PM

Hughie, can the 50mm pad be swapped out for 75mm?

**hughie** · 7th October 2018, 07:32 PM

Originally Posted by Pat

Hughie, can the 50mm pad be swapped out for 75mm?

Currently I have 50mm, but will look into 75mm and get back to you. But if you can get a 75mm one in, perhaps the standard type would do, or are they just too short on the handle.

**Pat** · 7th October 2018, 07:45 PM

Hughie, I have hex shafts, so they probably would not work with your sander.

**Lyle** · 7th October 2018, 08:05 PM

I'm interested. What is cost posted to 2318 please.
Lyle.

**hughie** · 9th October 2018, 07:07 AM

Originally Posted by Pat

Hughie, I have hex shafts, so they probably would not work with your sander.

Pat what would the diameter be across the hex points, might be able to do something

**China** · 9th October 2018, 03:09 PM

I will have to wait for the next batch the plumber is eating up all my spare cash

**hughie** · 9th October 2018, 03:42 PM

Originally Posted by Pat

Hughie, I have hex shafts, so they probably would not work with your sander.

Pat ok the best I can do is 70mm and I can fit it to the sander, the same price as its a one-off.
If anybody else wants a larger I have to look into a price increase.

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