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deltaenterprizes
12-20-2009, 01:36 PM
How many lines per inch for an anti -glare Patridge type front sight?

38_Cal
12-20-2009, 03:14 PM
I perfer a 40 or 50 line per inch look using a metal checkering file.

David

Al Messer
12-20-2009, 05:51 PM
Old timers used a smokey oil flame to dull the glare when competing at matches. Of course, this would not work afield, so the 50 lines per inch will do nicely.

deltaenterprizes
12-20-2009, 07:30 PM
Thanks, damn those files are expensive!

38_Cal
12-20-2009, 10:59 PM
If you're making a sight from scratch, set the blade with the surface to be grooved vertically in the mill, use a 45* or 60* dovetail cutter and raise the cutter .020" for each pass, just lightly scoring the tip of the cutter into the face by about .010". It's not like you're checkering a front strap on a 1911 frame...

David

Boucher
12-23-2009, 10:36 PM
There is a minature carbide lantern type made like a cigarette lighter with a flint. For flat black on serious target work you can't beat it. A black magic marker is adequate for just masking holster wear/polish for most everday operations. There was a thread earlier that showed the checkering of the front strap with a thread tap with three flutes ground off. That trick might be usable for lining the front sight.

deltaenterprizes
12-23-2009, 11:48 PM
I like the idea a 6-40 tap, if I have a junk one. I am using that trick to put vent lines in bullet mold blocks. The last flute needs to be relieved a little to get nice narrow lines.
Midway has a checkering file a little cheaper than Brownells and that may put it in my price range.

38_Cal
12-24-2009, 11:35 AM
Actually, if you've got a knee mill, you can use any tap to make a cutter...grind off three of the four rows of teeth, and grind off all but one tooth on the remaining row on a four flute tap, and raise the mill by the needed distance for each line. If you go with something like a 1/4-20 tap you'll have a decent amount of strength after grinding. Grind the un-needed teeth down to about 1/4 their original height to get them out of the way.

David

JCHannum
12-24-2009, 01:16 PM
If using a 1/4-20 tap, leave the 20 teeth and raise the cutter 0.025" to produce 40 lines per inch. Infeed is the half depth for 40TPI.

mf205i
12-24-2009, 03:57 PM
I use a 8 in 1 thread restore file. Enco http://www.use-enco.com/CGI/INPDFF?PMPAGE=109&PMITEM=990-3075
BTW If you are not going to holster your gun, a sight that is hooked-undercut, one that leaves the face in shadow, is the superior sight.
Mike

deltaenterprizes
12-24-2009, 05:00 PM
I had a very scary experience with front sights ans holsters. When I was a Reserve Deputy, I changed the sights on my duty gun to night sights with tritium inserts. The front sight was about 1/32 higher than the old sight,just enough to grab the liner in the sight channel. When I got home after a couple hours on the street riding along in a patrol unit I attempted to unholster my weapon to unload and store it inthe gun safe. The gun would not come out of the holster with the normal amount of force! A good stiff yank freed it, but if I would have need it I would have been in deep do do !