Jeweling a bolt

[potatoe]

Anyone got some info on a jig that's sold do jewel a bolt?

 

[GerryM]

I remember them long ago. It's jut a jig with centers to hold the bolt.
I did a few with a small vice that would fit on my drill press.
I fi were going to do a lot of them i would consider buy one or making one.

 

[Lapua40X]

Anyone got some info on a jig that's sold do jewel a bolt?

Most machinists I know have their own shop made mandrel along with a live center or a shop made support for the lug end of the bolt. Remove firing pin, screw in the adapter/mandrel, align the work and go for it.
It's the index head that's most critical in the jeweling process.

 

[rayjay]

I'm envisioning using the mandrel I made that screws in place of the bolt plug and chucking it into the lathe and then a tool post grinder or something improvised. Dremel tool mounted via the threads just behind the chuck ???. Degree wheel on the rig somewhere.

There are lots of diy articles in old 'home gunsmithing' how to books. Maybe even somebody like B-Square made the jig.

I have a matte blued bolt that I thought about doing. Maybe even just the area of the bolt that shows in the ejection port. Would this be Podunk ?

 

[Gabe22BR]

why not have it fluted an be done with it?

 

[potatoe]

I like messing with some of this DIY stuff. Plus I want a more tradition look over fluting for this build. I did find a link that I'll try out
http://www272.pair.com/stevewag/jb/jb.html

 

[Ggmac]

Anyone got some info on a jig that's sold do jewel a bolt?

How handy are you ? If yes get some small block Chevy cam gears or any bicycle gears , mount on a block of wood with l brackets on each end . Make a spring detent to engage the gear , one tooth at a time . Use all thread to secure gear thru L bracket and grind one to a point to enter bolt firing pin , other end to enter bolt body . Mount bolt between L brackets and use the detent as a stop for rotation . Mount the hole rig in a drill press . I could draw it and take a pic and email it .

Or I could find the pic in Gunsmith kinks and email it

 

[Hal]

Check over on the accuratereloading forum in the custom rifle section.

Hal

 

[Milo 2.0]

 

[NickB1075]

I have used a 5c indexer on the mill and a small aluminum v block in a small machinist vice to stabilize and support. It took some playing around but once I got into a rythem it worked just fine.
I have seen some homemade jigs for a drill press using the cheap XY table and holding fixture.

Nick

 

[hogpatrol]

I do mine random, by hand. Your methods may vary.

 

[carlsbad]

I use a collet indexer on the milling machine. --Jerry

 

[billlarson]

I do mine random, by hand. Your methods may vary.

Absolutely.........take a pencil/dowel.... wrap emery cloth around it and go...... helps to have a vise... but can be done easily w/o........I made a fixture years ago with some spur gears.....
haven't used in a long long time............
bill

 

[Brians356]

I was hoping to see the jeweling process. (Is that also called "engine turning"?)

What's gained by fluting a bolt besides weight reduction and aesthetics? Is a fluted bolt less stiff than a plain one?
-

 

[Gabe22BR]

[QUOTE="brians356

What's gained by fluting a bolt besides weight reduction ans aesthetics? Is a fluted bolt less stiff than a plain one?
-[/QUOTE]

gives dirt/trash a place to go??

 

[normmatzen]

I made my fixture from an article somewhere on line. It used pieces of 1 X 4 pine and some 1/2" bolts from Home Depot. I bought lapping compound and polishing brushes from I think Brownells and chucked it in my Harbor Freight table top drill press and clamped a 1 X 1 stick on its table with marked off lines for index and inserted my Mauser VZ-24 bolt and used the bolt flats for rotating indexes. It took a while but one setting.
I think it did a great job!