1911 Firearm Addicts banner

Question about cutting a french border…

858 Views 17 Replies 11 Participants Last post by  Metal Smith
A) how deep (technically, wide) to make the cut?

B) Use a tool with a sharp tip, or small radiused tip (.005, .010, 1/64” etc)?

C) Make the cutter parallel to the base (perpendicular to the slide flat), or make the top & flat & cut symmetric by putting the cutter at an angle to bisect the intersection of the slide flat at top-tangent?
Handwriting Font Parallel Slope Diagram

D) If parallel, cut it centered right ON the flat/round intersection line, or offset the cutter tip slightly below so the width of the cut comes up to the slide top intersection line?
Rectangle Parallel Font Slope Diagram

E) why the hell are single-point threadmill cutters so expensive. And I don’t have an arbor saw for slitting either. Can I use a HSS double-angle cutter like this?
Double Angle Chamfer Cutter 1/2 dia X 60 degree MariTool
See less See more
1 - 1 of 18 Posts
Some slides (Colt) will not have a straight line where the round and flat intersect - you'll spend some time trying to indicate that to make it look good. If you're struggling to find a straight line sometimes you can go ahead and make the cut just a little low and bring the round to the cut with a descent file and some sandpaper especially on the end of the cuts if your going with a run out type of cut .

the arbor and saw that @Kandros Customs has pictured is a 60 degree -.062 wide and around 1.25 diameter , those are what I like , from EGW and they can be reground if you can spare an arbor for the grind shop to use . EGW arbors are a really nice stepped cap design very precise .
1 - 1 of 18 Posts