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Decimator/DecimatAR with OEM barrel (self.help)

submitted 1 month ago by hogleg to c/help

8 comments fedilink hide all child comments

I have been incapable of finishing a decimator build with an OEM barrel; 2 different OEM barrels as a matter of fact.

I've reprinted the upper twice (once because I wasn't sure if I just really messed up the print, once for stripping barrel nut threads) and I've reprinted the barrel nut 3-4 times at this point.

I started this build just before fosscad was nuked, and since the Ark is back up (https://forum.guncadindex.com/c/ark@fosscad.io), I was able to see that there are threads where others have had this issue.

Has anyone overcome this issue personally? The build looks great and I love the AR fcg but I'm hitting a wall here. Should I just drill and pin the barrel nut with a couple of set screws?

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[–] notsuspekt 1 points 1 month ago (4 children)

If I recall correctly, he oriented the barrel nut super weird, with the bore facing sideways. I did mine vertical and it threaded on fine but he had a good reason for that orientation.

Have you done dimensional calibration, like a calilantern?

[–] hogleg 2 points 1 month ago (3 children)

Yeah, I ran into the same thing with the orientation; got farther after orienting it vertically, but like you said, he had a reason for the original orientation.

And I have not done that; I've never even heard of the calilantern. I will for sure give that a go. Thanks!

[–] notsuspekt 1 points 1 month ago (2 children)

It helps a lot with threads, and under/over extrusion. If you need the files DM me, you're not supposed to share them cause OP has cancer and he sells them.

[–] hogleg 2 points 1 month ago

I appreciate it! I'll throw him a few bucks for his work and guide. Wouldn't want to see that become standard in fosscad or a lot more people would end up losing fingers, I think :p

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