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Steve-l, There are many different 3D printing plastic materials, with varying properties. PLA has poor thermal creep resistance...

Something that preferentially sanded down the lands, regardless of grit size. Would not happen with a "hard" lap cast of lead.

Same thought I had. My guess is it has less to do with 2500 vs 3500 grit and more to do with the procedure used.

steve-l, You assume too much. I started making mods for my own airguns, based on the idea that the smaller the baffle bore clearance...

Blueduck, Barrel whip is a good way of thinking about it. Barrel bands should shorten the section of barrel that is free to whip...

Cost VS benefit remains a strong driving force; even if the same company makes all components in a given system. At least a single...

This is an excellent, thought provoking line: “often in engineering and commerce, the pursuit of perfection is the enemy of good.”...

steve-l, Your rod method is great for verifying static alignment. When you actually shoot your airgun, additional clearance may be...

@subscriber and @TorqueMaster both dodd a great job with a prototype mod based off of one i put together for the notos. it’s definitely...

rootdude, Details would help: What caliber are you shooting, at what power? Are you using an optic, or the stock open sights? I might...

A cast "hard" lap is the best way to relieve a tight spot in a barrel, because it preferentially cuts the tight spot. Rougher grit can...

Dear Subscriber, thank you veru much for the detailed explanation. Really appreciated 😊👍 I Will try to inspect the barrel again this...

I use an electric staple gun and hang it on the fence,

Aldhy, The easiest to fix would be if steel is raised into the barrel bore at the edge of the o-ring groove because it would be very...

Presumably no machining operations were done to the region of the barrel where the perceived loose spot is now. In other words, there...