canon fd 500mm on eos

so I just ordered a beat up fd 500mm 4.5 lens it was at a ridiculously low price, I plan to shoot with this lens on my 1d bodies. I use a fd-eos adapter that works great with other fd lenses on my 1d and 1dII, I will use this adapter at first to shoot with the 500mm. but I plan to build an adapter like the edmika or buy one if I can. I just cant seem to find any .75mm around

I want an adapter that gives me the true IQ of the lens, without adding the 1.25x and non L glass.

so has anyone used the eos mount off a broken lens, added a bit of meat to it to create a fd-eos adapter? on my next day off If I can't find the adapter I am looking for I will try some experiments, see what happens and get back to everyone on what I come up with.

thanks a bunch!

Here is an expensive .35mm adapter: CIRRUSADAPTER 0.35MM Canon FD to EF Adapter,

This one is less than $20 and is actually much thinner than the usual FD to EF adapters you see on ebay.

Macro Canon FD Lens to Canon EOS EF Mount Adapter

It is only about 2-3mm thick while most ebay adapters about about 10mm. Because it has no glass it acts like a very short Macro extension tube. It won't focus very far with my 50mm lens, but it might let you focus far enough with your 500mm lens. I would guess maybe 15 feet?

Get yourself an Eos M, and an FD to Eos M adapter (a few dollars from ebay).  This will allow you to check out the full performance of your 500mm lens.  The Eos M has x5 and x10 views to aid focusing manually.  If the Eos M isn't possible for you, other mirror-less CSCs are, and adapters may be available.

I'm using mine to check out my collection of FD lenses.

Thanks everyone for the help on getting my fd 500mm lens up and running on my dslr bodies. I am considering all the suggested options I am researching everything and will get back to this post with the techniques I go with and how they work, I really like the idea of the eos m, I have been eying those cameras for a while now. But I really would prefer to be shooting with my older more familiar bodies. I will get back and add my new ideas and info soon.

thanks again,