Home Made Paper Patch Mold...DONE!

[rbertalotto]

I finished my home made paper patch mold and cast a few bullets with it. Lots of pictures so I wrote an article with pictures and posted it on my web site.


Hope you enjoy it!


www.rvbprecision.com


http://images108.fotki.com/v1279/photos/2/36012/13645906/P3220027-vi.jpg

[LynC2]

Nice write up and good looking PP boolit. Let us know how it shoots too!

[rbertalotto]

Thanks Lyn! I'll let you know how it shoots once the range clears of snow and ice and we can use it again.......Tough winter!

[Lead pot]

Good job Roy.

My Sheldon is down, has been down! You just gave me the incentive to get it back in time and running again. Never thought using the milling attachment I have to cut the D cutter.

[rbertalotto]

I added an update to the article on how to convert a LEE lube groove mold to a Paper Patch type mold

www.rvbprecision.com

[smoked turkey]

Although I do not paper patch at this time I enjoy learning about things like this. Very interesting and informative article. Very well done both in the presentation and the actual paper patch boolit mold. Thanks for all your informative articles.
Stan..aka smoked turkey

[montana_charlie]

Do you wish you had a four-banger?
Maybe you could try your hand at copying this old thing.
http://www.ebay.com/itm/Antique-Sharps-Gang-Mold-45-2-7-8-550-Grain-P-P-/201314830234?pt=LH_DefaultDomain_0&hash=item2edf4c879a


http://i.ebayimg.com/00/s/MTIwMFgxNjAw/z/Ya0AAOSwPhdVBi5s/$_57.JPG

[rbertalotto]

Now THAT is something I've never seen before. Looks like it wouldn't be to difficult to make either. Thanks for sharing!

[longbow]

rbertalotto:

Is you mould made with just a cavity or do you have an ejector pin to push out the boolit?

I make very similar moulds I call push out moulds and they are very similar to the old Ideal Cylindrical moulds. Most are base pour with the nose form being the ejector as well. I have also made them in nose pour hollow base where the nose form is separate and the hollow base plug is the ejector.

Now that gang mould montana_charlie posted is interesting. I was thinking of multi cavity too but more conventionally using a piece or rectangular bar stock with a row of holes along it and a conventional 4 or 6 cavity sprue plate. I would go with sliding nose forms as ejectors as well.

Nice job on your mould by the way and nice looking boolit. It should shoot well for you.

Longbow

[Buckshot]

............I've made several boolit, shotgun slug, and core moulds on the lathe, but I like to use a faceplate for that work. You can make up a fixture to hold the blocks, or use a die vise or precision ground angle plates.

http://www.fototime.com/EC6E32186093ED1/standard.jpg

Angle plates work similarly. Once one angle plate is indicated the mould blocks are laid in place, then the 2nd angle plate is attached to the faceplate on the opposing side of the blocks. The 2nd angle plate has been modified via D&Ting 3/8-24 in 2 places facing the mould blocks. Once set in place with the bolts snugged on the face plate, the two 3/8" bolts through the threaded holes are snugged up against the other block half.

For drilling/boring multiple cavities, a DTI is placed against one end of the blocks. The adjustable angle plate has the two 3/8" bolts loosened and you move the blocks the required amount, than re-tighten the two 3/8" bolts. Same when using the vice, only you loosen the jaw, move the blocks and re-tighten.

For making my own moulds I also use 6061-T651 alloy, only in rectangular bar form. Two sizes serve for most all blocks. The 2 sizes are 5/8 x 1.5" & 3/4 x 1.5".

http://www.fototime.com/EA6CBE1EF182084/standard.jpghttp://www.fototime.com/8AA949CD5B29C6F/standard.jpg

The above is a shotgun (12ga) mould. I used 7/8" stock mainly due to requirements of the floating retained core pin. The screw heads seen serve to retain the handles and the core pin plate.

http://www.fototime.com/E9D0FF9AF29F21F/standard.jpg

Core pin plate closeup with attaching hardware.

http://www.fototime.com/8303120BB3ED705/standard.jpghttp://www.fototime.com/B64AAA33A9F0150/standard.jpg

The slug and it's base cavity. It weighs 525grs. More in line with paper patching but made similarly are core moulds for swaging boolits for patching.

http://www.fototime.com/096CE7F75FAF235/standard.jpghttp://www.fototime.com/8ED8737B8004644/standard.jpg

LEFT: Top view RIGHT: Bottom view. You have the 3 cavity length rods and lock nuts down the center to vary the weight of the cores. These are carried by the baseplate attached to the blocks. The holes at 9 & 3 allow access to the handle screws. And the 2 flathead screws on the right retain the bottom plate in position.

http://www.fototime.com/8ED595D0A7950F3/standard.jpg

Core mould with the right block half removed. For the female alignment holes I use stainless tubing, that is pressed into position. The male alignment pins are machined to fit the tubing ID and are also pressed into the blocks.

[Buckshot]

..................Like you I also use form tools to make cavities in moulds (like the shotgun mould above) or

http://www.fototime.com/49F3E03B63F0C68/standard.jpg http://www.fototime.com/04D3DBD93124C8E/standard.jpg

...........this one for a full WC slug for a .577 Snider.

http://www.fototime.com/2730F23D652AB9A/standard.jpg

I have a RCE swage press and make my own swage dies for paper patched boolits. I use 12L14 steel for the dies and do not bother to case harden them. Plus I use Soviet engineering and make the wall thick! :-) They're step drilled first.

http://www.fototime.com/129DCEECEED65CD/standard.jpg

Then to form tool is used. My lathe does not have a DRO so I set up a DTI on the compound feed and on the carriage. The swarf comes out as oily powder. The leaded steel machines to such a fine finish that only minor lapping is required to finish, if at all. The tool is HSS.

http://www.fototime.com/FBC4A50229228CB/standard.jpg http://www.fototime.com/6DD15BDBE5D31B1/standard.jpg

The form tool, or 'Spoon'. This one is good for 40 caliber on up, so long as the ogive fits your need. These 3 swaged slugs are for my Uberti Hi-Wall in 38-55 and are of 3 different weights in trying out the new die I'd made.

http://www.fototime.com/881261E4534FC9E/standard.jpghttp://www.fototime.com/C7D157A0C5FAF41/standard.jpg

Here's a bunch ready to go. On the right is a dummy that was used to set the seating depth. Lands engrave 1/8" into the paper. Slugs weigh 301grs (to +.3gr).

http://www.fototime.com/85B26C1E8A40EF8/standard.jpg

The paper patched slugs, benched 10 rounds, 100 yards. Eighteen grains SR4759, WLR primer, Starline 1.125" brass. That 45 cal hole doesn't belong. Sorry, I know this is BP paper patching, but I haven't tried. Well I have, but not much as I don't compete.

..................Buckshot

[BrentD]

Nice work. Very nice.