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That’s not a retaining ring…

Doppler9000

Active member
I designed this ring in a CAD program and sent it to Raf. He transferred the design to his system, added the threads, made the part, anodized it, sent it to me via the US, for $75 plus shipping

The ring fits the lens beautifully.

If you have the need for a well-made part that is within his wheelhouse, Raf is hard to beat.
 
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John Black

Active member
RAF is awesome. I've done similar design / build projects with S.K. Grimes - great to work, but they can be pricey. Iterating comes with territory when designing custom bits, so going through a design / prototype processed with S.K. Grimes can get expensive. I'm getting similar projects done with RAF for 1/3 the price. Shipping can take awhile from Belarus, but that's a small price to pay vs the overall savings. Big thumbs-up for RAF.
 

buildbot

Well-known member
RAF is awesome. I've done similar design / build projects with S.K. Grimes - great to work, but they can be pricey. Iterating comes with territory when designing custom bits, so going through a design / prototype processed with S.K. Grimes can get expensive. I'm getting similar projects done with RAF for 1/3 the price. Shipping can take awhile from Belarus, but that's a small price to pay vs the overall savings. Big thumbs-up for RAF.
Tangential, I'm kinda annoyed with SK Grimes, they don't want to make a 128mm filter for me with course threads without sending in the lens. I told them I don't want to mail a 22 pound 800mm lens, but they didn't seem to get that... If it's not perfect fit I wouldn't blame them. I'll ask RAF maybe, I'm pretty pleased with the adapters I got from them today.
 
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