|Project by HillbillyShooter||posted 06-09-2014 02:55 AM||2958 views||9 times favorited||18 comments|
The recent acquisition of a Magic Molder head and some cutters ( www.magicmolder.com ) from my buddies at Ballew Saw & Tool here in Springfield ( www.ballewsawandtool.com ), prompted me to move forward with this project. I made seven Zero Clearance Inserts (ZCI) when I first got my PM66 back in 1994, but have discovered the value of using them since joining LJs a couple of years ago. The last three are now history.
The question of what would constitute a ZCI with everything I wanted has been rambling around during these past two years. The top two things are a red formica top and the ability to level the insert from the top like the factory insert. Next would be a jig system to speed up production of identical ZCIs, and allow for production of more ZCI in the future if needed.
The first step was to design a way to drill the finger holes at the exact same location on each insert (photo 2) and use one insert blank as a template to align each insert for trimming to exact size (photo 3) and drilling for the adjusting screws (photo 4) and a hole for the Biesemeyer splitter/anti-kick back attachment behind the blade when ripping. (photo 5)
There was a piece of 3/8” Baltic birch that I had on hand measuring 30” by 42-1/2”, so I covered one side with red formica and the other side with gray formica (both sides have equal stress this way). I used threaded coil inserts in the adjustment screw holes. I should now have enough blanks for a while. (photo 6)
As always, comments (good, bad, critical or whatever) are greatly appreciated. Thanks for looking.
-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington