Cali_Ed Posted October 15, 2014 Report Share Posted October 15, 2014 With out a drill press? I've seen the eighty percent router based jig. Which sees to look pretty easy. Any thoughts? Quote Link to comment Share on other sites More sharing options...
briflemn762 Posted October 18, 2014 Report Share Posted October 18, 2014 I know I may sound like an idiot but, wtf is an eighty-percent?? Quote Link to comment Share on other sites More sharing options...
Cali_Ed Posted October 18, 2014 Author Report Share Posted October 18, 2014 80% lower Quote Link to comment Share on other sites More sharing options...
briflemn762 Posted October 18, 2014 Report Share Posted October 18, 2014 I thought I was the only one up this late. I'm still ignorant. I've use a router jig to rough out a bolt rifle stock's barrel channel, but I've never heard of an 80% lower. I got out of the match game before AR's got popular and never heard of that in relation to the M-16's I'm familiar with. I have built a HB 16" upper and put it on a Bushmaster lower, but I guess I'm still new to the terminology that's come with the popularity of the platform. Quote Link to comment Share on other sites More sharing options...
briflemn762 Posted October 18, 2014 Report Share Posted October 18, 2014 Did my research. Now I think I know what you were asking, I think at a minimum, you'd need a 1/2" drive bit and a carbide cutter and a heavy-duty router with speed control. I've never tried milling aluminum with a router, but it might work. Probably need a bit extension to go deep enough too. My biggest concern would be bit chatter. Quote Link to comment Share on other sites More sharing options...
mineralman55 Posted October 18, 2014 Report Share Posted October 18, 2014 There are plenty of YouTube videos of people using drill presses with regular HSS bits completing the 80% lowers. Just look them up. Quote Link to comment Share on other sites More sharing options...
Cali_Ed Posted October 18, 2014 Author Report Share Posted October 18, 2014 I've had a look at them, the 80% arms jig and lowers with the router style cutting seems to be the easiest way to go if you don't have a drill press ( I dont ). Quote Link to comment Share on other sites More sharing options...
briflemn762 Posted October 19, 2014 Report Share Posted October 19, 2014 There are plenty of YouTube videos of people using drill presses with regular HSS bits completing the 80% lowers. Just look them up. Could be - just outside my experience. It's a lot easier, in my experience, it's a lot easier to control rate of feed with a drill press. I always tend to get ahead of the router when I try to plunge it into tough woods like Teak or Koko. I've never tried to route aluminum. Quote Link to comment Share on other sites More sharing options...
Cali_Ed Posted October 19, 2014 Author Report Share Posted October 19, 2014 From what I've seen, nice and slow does it. Just use a drill for all the drilling and then let the router do the work or it will start to jump. Quote Link to comment Share on other sites More sharing options...
briflemn762 Posted October 19, 2014 Report Share Posted October 19, 2014 Yeah. I tend to push it. Don't have the patience i did when I was younger - not as steady freehand either for some darn reason. I also like the better visibility I get on a press. I spent less on my benchtop press than I did my Craftsman heavy duty plunge router too. I got it on the cheap at Harbor Freight but it's worked well for me. Quote Link to comment Share on other sites More sharing options...
shepp Posted October 19, 2014 Report Share Posted October 19, 2014 Drill press is a nice tool, I'm luck enough to have one at work but it's a hell of a lot easier going with a press. No binding goes in straight Quote Link to comment Share on other sites More sharing options...
Jeshelto Posted October 21, 2014 Report Share Posted October 21, 2014 If you get your hands on a CNC there are files you can use (someone on this site has them I'm sure) where it will drill it out perfectly. Also, there is a couple places around San Diego that do "Machine Rentals" where you take your 80% and they walk you through how to do it. I'm still looking for the right people to do this with. Actually I have access to a CNC but I don't have the files. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted October 22, 2014 Report Share Posted October 22, 2014 The best place to obtain the most common files is from CNC Gunsmithing. Justin is one hell of a good guy. http://www.cncguns.com/ Quote Link to comment Share on other sites More sharing options...
shibiwan Posted October 22, 2014 Report Share Posted October 22, 2014 (edited) You could drive to AZ and use my CNC mills and pay me instead :D Edited October 22, 2014 by shibiwan Quote Link to comment Share on other sites More sharing options...
Cali_Ed Posted October 22, 2014 Author Report Share Posted October 22, 2014 I may have to shibiwan hahaha Quote Link to comment Share on other sites More sharing options...
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