I pulled the barrel on my new Benjamin Akela and the tops of both barrel o-rings were badly sliced up. I suspect that one or both of the holes for the set screws have burrs. It's a very difficult spot to get at. Any advice from the pros?
Tuning Advice needed: removing burrs from barrel set screw holes?
- Thread starter Stretch
- Start date
If you can find a small enough ball hone to smooth out holes I know some of the mrods had same problem
Upvote 0
Gota couple options. From the sound of it, you cant get to it with a dremel bit (I ususally use round diamond bur bits for this). If that's the case, you could use sandpaper. I'd probably tape some to a dowel, and go at it from an angle, just using the tip of the dowel and some pretty fine paper. Go slow, and keep checking your work and placement.
Upvote 0
I’m not familiar with that exact model but the raised burr is in a soft metal, either steel or bras maybe even stainless steel. In any case a manicure nail board like in photo should do fine. If you’re trying to avoid removing bluing or black oxide just do it very judiciously.
Anytime I designed and built something that assembled like that I milled flats on the shaft (OD) portion so burrs would not raise above the diameter.
Anytime I designed and built something that assembled like that I milled flats on the shaft (OD) portion so burrs would not raise above the diameter.
Upvote 0
I'd try to enter in through your breech screw hole with a deburr bit and work the bur by hand, while tedious, should suffice.
-Matt
-Matt
Upvote 0
I like to use flex hones sold in different diameter and grit. I am usually just cleaning up airtubes after reworking or during resto work. If you just want to go cheap, get a dowel you can chuck into a drill. Build up a few portions with masking tape to fit the hole, undersizing an area to be under the offending screw holes. Wrap the undersized areas with sand paper. Insert to line up the sand paper with the set screw hole and mark the dowel as a reference on depth. Chuck it up and clean up the area. Then back it out spinning to prevent gouges. You may need to repeat with finer grit to get any scratches out.
Upvote 0
Thanks for all the great suggestions! I ended up using a ballpoint pen and wrapped some 1,000 grit sandpaper around it. Ordered some spare o-rings which should arrive later this week. Then I should be rocking!
Upvote 0