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I concur, it also looks like you may have had a bit of "chatter" going on with your cutting bit. That's primarily caused by cutting on the wrong side of the spinning bit, you want to cut on the side of the cutting bit going against the direction you want to traverse.That's still useable. At least it doesn't appear to be deep enough or severe enough to compromise the takedown pin hole. That top stuff is just a little fugly, but won't be noticeable or affect performance.
It just looks like your mill bit got away from you. You wanna make sure you''re not "tipping" your router when you go in for another cut. Keep the bit straight up and down for the plunge and let it spin down completely before removing it to adjust depth for the next pass.
Edit: You're right on the edge of your buffer retainer detent hole. Looks okay and the detent body itself is long enough to have a little stability on it's own, but you really don't want to tap that with your mill bit again.
You're right on point. Too big a bite at once will lead to a lot of chatter and dull your bit up faster.. that'll create even more chatter if you're not careful. If you're going to be doing more, you might consider upgrading your bit. Their stock milling bit only seem to last about 3 or so lowers... and the 3rd... it's noticeably more work to keep it "clean".....and tried not to take too big of "bites" (aka set the endmill too deep). Came out a lot better, not perfect but better.
I'll probably use the junky as a beater lower with a psa kit or something.
I see it...My Bertha PSA no one wants to play with. No worries... It happens....
View attachment 1232790
Spot the major flaw... get a cookie if you keep it to yourself.
Whaddaya mean "no one wants to play with"? You can't get an upper to fit with it?My Bertha PSA no one wants to play with. No worries... It happens....
Alright I'll admit it I have a lower floating around here some where that I milled all the way through there's no shelf for the trigger was tired on my last pass not paying attention it happensMy Bertha PSA no one wants to play with. No worries... It happens....
View attachment 1232790
Spot the major flaw... get a cookie if you keep it to yourself.
It functions flawlessly and fits just great, but it's definately cursed. Or maybe it's just because it keeps getting bumped down the upper lineup, but it seems like no matter what I put it on, no one feels like shooting that one that day.Whaddaya mean "no one wants to play with"? You can't get an upper to fit with it?
In my old high school, everyone took Betha for a spin...I'm going to trick them though. I put together a .22lr dedicated and slapping Bertha on it. I can't imagine any of the kids no wanting to take that one for a spin.
Here's another 1 my knw it all nephew who doesn't follow directions or instructions bought a jig & lower drilled straight through from 1 side the pin hole 4 the hammer wrecked his jig & the hammer is crooked know it all punk kid won't listen 2 anybody even told him more then onceAlright I'll admit it I have a lower floating around here some where that I milled all the way through there's no shelf for the trigger was tired on my last pass not paying attention it happens
Waah waah waaaaah...Here's another 1 my knw it all nephew who doesn't follow directions or instructions bought a jig & lower drilled straight through from 1 side the pin hole 4 the hammer wrecked his jig & the hammer is crooked know it all punk kid won't listen 2 anybody even told him more then once