My search fu is weak... or they don't make them.

[Halberds]

I am looking for a 5/8-11 female thread on one end and a collet for 1/4" shank tools on the other end.

I would like to use my air grinder 1/4" shank flap wheels, stones and drum sanders on my right angle grinder.

The grinder spindle is 5/8"-11 UNC.

Yes, I have thought about making one.
Perhaps a 5/8"-11 grade 8 coupling nut and weld an old air grinder collet to it.
However at 10,000 RPM slight misalignment becomes problematic.

So any of you tool gurus know where I can get this adaptor?

Thanks.

Hal

[losthelm]

it sounds like something that might have have custom made.
or you could start looking for an eletric die grinder on Ebay or craigslist.

[Oswyn_de_Wulferton]

Have you thought about looking into Dremel and things like that, and seeing if their collet nuts go up to that size? If so, that may be a cheap way to get what you are looking for. I can go and measure the standard one I have, but I think it is more like 1/2" than 5/8"

[Halberds]

Thanks guys for the ideas, I will examine them.

What started this search... my air die grinder died after 9 years of hard use.
Not that it wore out, it fell from the bench and broke the goesenta flange.

I will replace it, but I was looking for a way to save on my poor air compressor.
It can not keep up with the air tool demands.

I will start by removing the 1/4" collet from the grinder then going from there.
Looks like a little innovation may be needed.
Perhaps a machined bore 5/8"-11 adaptor and press fit is in order.
I am sure welding will warp it to an unusable out of balance condition.

Another option is to have an adaptor with a 1/4" bore and use set screws.
I can drill the 1/4" bore on the lathe to insure alignment.

I sure like my various sizes of drum sanders.
They make the nicest radius on the metals edge.

For instance; on cheek plates, I clamp them together and use the drum sander to shape and match each piece together.

Hal