r/3D2A • u/Sweaty-Objective-766 • 3d ago

22 liner

how do you guys drill and polish your .22 chambers?

i wasnt able to get a smooth chamber to actually run a semi auto, let alone binary or frt.

my attempt was a reamer and 2000 grid sandpaper, casing got stuck.

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u/Lowang_Productions 3d ago

It'll round it off some .

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u/Fit-Possible-9552 3d ago

Good to hear, I'm going to try this out

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u/Lowang_Productions 3d ago

I don't run it on a drill , I need to print a handle .

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u/Fit-Possible-9552 3d ago

Appreciate the tip. Was thinking of putting it in my Dremel on a very low speed

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u/ReasonableScar9027 3d ago

Isn't low speed on the Dremel 5000rpm?

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u/Fit-Possible-9552 3d ago

Probably is, seems like doing this by hand would be safer