Hello all, about a year ago I bought a blank drilling fixture from AK Builder.com
I didn't get around to actually using it last week when I noticed that holes on the sides were off about a little more that a 16th" about .075" actually. It appears that there is a misalignment between the bottom plate and the side plates. One or the other set of holes that are used in securing the plates are off. I checked to make sure that I didn't have the blank secured incorrectly but placing another un-drilled blank in the fixture and the X and Y holes were clearly not correctly aligned. Has anyone else had this problem?
While I don't have one of the drilling jigs, I use a cut up Romy crushed receiver from Apex. I cleco the side plates onto my blank and use a drill guide on both sides, to drill a #30 pilot hole. On the Polish blank I just drilled in this fashion, it came out very similar to your results. All I can think of is that the Polish blanks are just a little different than most AKM patterns, and that the drill jig is set up as a standard AKM.
How did you determine that it is the jig that is off and not the crows feet?
I have been using one of those jigs for a while now, mine is right on the money.
If it is indeed the jig that is off, contact curtis. He is a stand up guy and will make things right.
Wait! Wait!! Do you mean that the Poles would have taken an entire 56,000 piece run that was off, and sold it to US????? NO!!! Say it isn't SO!!!:dunno:
I bought one of these several months, no make that more than a year ago...and the item was, well....okinit:
Terribly sad, but hey! They have learned all of the lessons of Capitolism! So we got that going for us, right?
I search here and on the web but could not find any videos on using th AK Builder drilling jig. Does anyone know if a video on how to use it it exists? Thanks very much in advance for any information.
My experience with them is they are a little longer than the Flats I used historically from Curtis.
I initially used a Template but fcg holes were not "cock on"
What I did eventually, was dump the Templates, Trim the back of the Receivers to achieve same Overall length as a Curtis Flat and use a Caliper to mark and drill hole location. Everything came out spot on.
Not used the Curtis Drilling fixture , so can't comment.
All other stuff from I've had from Curtis is A+++++++, Especially the trigger Guard Drilling jig for rivet removal. I've used that little tool for removing all AK rivets without a problem. Best $25 ? I've spent in a long while.
I noticed mine was off slightly as well. Not as bad as those though. I pushed the roll pin down in the jig, centered the holes on the X and Y, then clamped the blank extra tight and drilled the holes. I pushed the roll pin back down and drilled the rest. All turned out good.
The length of receivers vary from country to country. Most are like the Polish blanks and measure 10.213 well the Romanian receivers are 10.173 overall in length. The fire control group is always spaced the same tho.. even on milled guns.
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