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Discussion Starter · #1 ·
I wanted to take a break from building jigs and decided to use my milling machine for something different.

First thing was to fill in the rear trunion hole and grind them down. Then the fun part began... I didn't take any pictures, but the biggest part was getting the dimensions right considering that I was working with a flat not a bent receiver. The angles play a big part on where the holes line up.

Anyway.. here are a couple of pictures of before bending and after bending with my jig. The rivets are just stuck in to line everything up for now. I'm toying with the idea of modifying a bunch of flats and not drilling the trunion holes. Would anybody be interested in that?
 

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I would be interested.

Just curious though, once the folder holes are drilled, the position of the trunnion is set.
Why would you not drill the trunnion holes?
Does the location of the rivet holes vary from one trunnion to the next, like front trunnion holes sometimes do?
 

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Looks great stickerman!! Keep up the good work. Which template did you use for the underfolder? Do you have a link?
 

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Discussion Starter · #5 ·
The only reason not to put the trunion holes is when the flat is bent they could possibly not line up if the bend isn't just right. I have 100 flats here from Tapco, but I don't want to bend too many just trying to figure out if it's perfect.

The dimensions were taken from a trunion and what was left of the sheet metal receiver. I put the trunion in my mill vise and used the digital readout to map out the dimensions to each hole from a specified point. Then I took an existing cad file that shows the whole flat and drew the holes in. The only problem was that the angle wasn't there for the holes so after printing out a bunch of transparant sheets to match up until I finally got close enough to make one flat. I need to tweak the four folder catch holes, but other than that it fit just fine.

It would be nice if there was somebody in the Kansas City area that needed one or two of these made up so I could practice without making more receivers than I will ever need for myself. Right now there are three or four receivers sitting on my bench that I probably won't use that are all bent up and ready.

When I took the underfolder apart I took pictures of each step so it would make a good guide on how to do it. When and if I get some time I'll make it up and post it on my website.

www.ak-builder.com
 

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Nice Job !! I'd be interested in one.( I know, whoopie, one whole flat LOL)
 

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Discussion Starter · #7 ·
If I get enough people that would actually want one I would waste a couple to try and make them as exact as I can. Otherwise I won't bother with buying any more flats.

If anybody wants some I have 100 standard flats with rails for $14.25 each plus whatever shipping would be.
 

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Stickerman said:
If anybody wants some I have 100 standard flats with rails for $14.25 each plus whatever shipping would be.
Order sent through your website/PayPal . Great price. Thank You.
 

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MUST HAVE FLAT,, MUST HAVE FLAT.
put me down sign me up whatever it takes I am in for one at least!!!
 

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Discussion Starter · #11 ·
Ok, I'm going to try using the Tapco flat without welding the two rear trunion holes and see how it works out. It doesn't look like it will catch on the holes since the two pieces that rotate are pinned together and "shouldn't" try to move in and out independently. Then the other factor would be if the folder would cover the holes that are there if they weren't filled in.

After I get that all figured out I'll see what it would take to make one specifically for an AMD-65. Especially since the rear trunion holes are different plus the cutout for the folding stock.

Any other requests for something different that you don't see all over the web?
 

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Stickerman said:
Any other requests for something different that you don't see all over the web?
Are the modified flats $14.25?
Would you be able to do a flat for the AK-100 series folding buttsock?
 

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Discussion Starter · #13 ·
If I were to take the time to modify the flats they would be about $30 to $35. There are several tooling changes plus welding to be done on the flat.

I've never seen the AK-100 folding stock setup so I don't know what it would take to modify one for that.
 

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AK74M/AK100 series buttstock and trunnion:






Hope this isn't too big :)
 

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Discussion Starter · #15 ·
That probably wouldn't be too horrible to try and modify a flat for. The one side with the slot would have a small radius on the back edge though. I would have to have one here to work with to really know what it would take to get them done.
 

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I'm debating whether to pick one of these stocksets up or not, they are hard to get and expensive, but I know of a guy that has some here in Tucson. Now that I look at the flat and the pics of the AK105 that I posted, I think it would be simple enough to do myself. The underfolder reciever mods look a lot harder.
 

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Stickerman said:
If I were to take the time to modify the flats they would be about $30 to $35. There are several tooling changes plus welding to be done on the flat.
If you'd be interested in doing up any underfolder flats, I'd be willing to pay the
above amount for one. I have a Polish kit, and don't have the tools really
required (nor the hands-on skill) to do up a flat myself.
Cheaper too, as Gunsnstuffonline.com wants $50 for such a modified flat.
 

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i need two for underfolders ? is that what your selling or just the flats
 

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Discussion Starter · #20 ·
Looks like I can start making up those modified flats now. They will work without welding up the two trunion holes since it doesn't affect how the stock folds up. If anything only one side would need to be done, but welding and grinding on the flats would take quite a bit of time in the end. If somebody wants to weld them up once they get them then that should work. You can't really see the holes either so it's not a real cosmetic issue either.

Last night I made up about seven of the flats and bent two of them to make sure they work fine. Today I sent one to somebody that lives fairly close so I can get somebody else's opinion of how it worked out.

If anybody wants one let me know and I'll start making up some more. Right now I've got three ready to go for $35 each plus shipping.
 
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