The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting > Bullet Casting

Reply
 
Thread Tools
Old June 18, 2012, 11:50 PM   #1
awbrock
Member
 
Join Date: November 10, 2008
Location: SC
Posts: 41
What do you do to your molds after the casting session?

Sorry if this is a repost. I tried searching but didn't seem to find anything.

I just started casting. I have a Lyman 358665 2 cavity mold. I casted my first boolets tonight. I was wondering what you guys do to preserve your molds after your casting session. The mold is hot and as it cools I would think a small amount of moisture would develop in the cavities which could lead to rust and other undiserable situations.

I've read here before lots of guys saying they don't put anything in their mold cavities.

Don't want to ruin my molds with oil or anything that may damage them, but surely do not want them to rust!!

Thanks in advance!
AWBrock
awbrock is offline  
Old June 19, 2012, 03:40 AM   #2
Mike / Tx
Senior Member
 
Join Date: April 8, 2000
Posts: 1,259
I only have a couple of the iron type molds. When I am done pouring, and while they are still pretty warm I take a q-tip and a touch of Kroil and apply just enough that I can tell there is some on the mold. If it is still warm enough, it will smoke a bit but it will still protect them for a good while. You only need enough of the Kroil on the q-tip to actually see it is damp, not dripping wet.

I haven't noticed it making much of a difference when I break them out later on. Once I set them on the hot plate to bring them up to temp they smoke a touch sometimes but when I start casting they usually throw good boolits from the get go.

Just don't get overly crazy with the application and make sure you mold is still pretty warm but not overly hot. If the Kroil smokes a touch, but you can see a bit of residual oil, it is just about right, if it flashes, and you see nothing your still way too hot. Just touch the outside edge with the q-tip and you can quickly see the difference.

That's what I do, give it a try on one and see how it works for you.
__________________
LAter,
Mike / TX
Mike / Tx is offline  
Old June 19, 2012, 06:59 AM   #3
hornady
Senior Member
 
Join Date: April 6, 2009
Location: SWPA
Posts: 428
I will second the Kroil, I use nothing but Lyman and RCBS molds. The only thing I do different if storing the molds over the winter I put a little heavier coat of Kroil on them. Then in the spring when I start casting I clean them with paint thinner. The first few may drop a bad bullet, but the oil will burn off fast. And you start getting good bullets in no time.
hornady is offline  
Old June 19, 2012, 08:22 AM   #4
Rifleman1776
Senior Member
 
Join Date: April 25, 2010
Location: Arkansas
Posts: 3,309
Cast iron moulds are very suseptible to rust. I spray mine, after cooling, with an anti-rust protectant. Failed to do this several times over the years and lost some good, and very expensive, moulds as a result.
Rifleman1776 is offline  
Old June 19, 2012, 10:02 AM   #5
dahermit
Senior Member
 
Join Date: October 28, 2006
Location: South Central Michigan...near Ohio, Indiana.
Posts: 3,505
I keep my iron/steel molds (and aluminum), in a large ammo can in the garage with some desiccant powder. They have been out there many Michigan Winters without any visible rust whatsoever. The ammo cans have a rubber seal that keeps them air-tight.

I do not have to remove any oil or other preservative from them when I start to cast. I just remove the two (I always cast with two molds), I am going to use, and put them on the lip of the furnace to pre-heat as the lead melts.

When I am finished casting, I let the molds cool down until just warm and put them into the ammo can until I am going to do some more casting.
__________________
Sometimes you get what you pay for, sometimes you only pay more for what you get.
Three shots are not a "group"...they are a "few".

If the Bible is the literal, infallible, unerring word of God...where are all those witches I am supposed to kill?
dahermit is offline  
Old June 19, 2012, 09:31 PM   #6
awbrock
Member
 
Join Date: November 10, 2008
Location: SC
Posts: 41
Thanks for the info Gents.
awbrock is offline  
Old June 19, 2012, 09:47 PM   #7
Ideal Tool
Junior member
 
Join Date: October 6, 2010
Location: Michigan
Posts: 1,080
Hello, awbrock. Since there is a chance I might not use that particular mould again for awhile..after casting, while mould is still hot, I clean off all lead deposits, etc. Then while still warm..being able to hand hold metal parts.. I spray with an industrial product called Mold Saver..has lanolin in it..I like to keep halves open to allow product to dry overnight..I know they will be just as I last used them. Clean up for re-use is simple using brake cleaner & a hot soapy water bath..lately I have been just using the hot soapy water.
Ideal Tool is offline  
Old June 19, 2012, 09:49 PM   #8
res45
Senior Member
 
Join Date: September 15, 2007
Posts: 553
Ed Harris told me to just coat the iron molds in USP Mineral Oil it prevents rust and burns off cleanly when you heat the mold on your hot plate with no cleaning before or after necessary. I've been doing this for several years now with my two old Ideal/Lyman molds.

After the mold cools I brush a coat of USP Mineral Oil over the entire mold block and sprue plate,rubber band the two halves together and put them in a zip lock bag and store them in an old coffee can.
res45 is offline  
Old June 20, 2012, 11:31 PM   #9
TXGunNut
Senior Member
 
Join Date: January 16, 2010
Location: If you have to ask...
Posts: 2,851
Probably doing it wrong but I douse the warm moulds w/ WD-40, then clean w/ brake cleaner while the pot heats up. When they need cleaning I use dish soap, hot water and a stiff toothbrush.
__________________
Life Member NRA, TSRA
Smokeless powder is a passing fad! -Steve Garbe
I hate rude behavior in a man. I won't tolerate it. -Woodrow F. Call Lonesome Dove
My favorite recipes start out with a handful of used wheelweights.
TXGunNut is offline  
Old June 21, 2012, 12:53 PM   #10
IllinoisCoyoteHunter
Senior Member
 
Join Date: December 23, 2008
Location: Southern Illinois
Posts: 1,505
I only use aluminum just for this reason. When I am done casting I simply throw them in the drawer. (I don't really THROW them, I place them gently... )
__________________
~~IllinoisCoyoteHunter~~

~NRA LIFE MEMBER~
~NRA CERTIFIED INSTRUCTOR~
IllinoisCoyoteHunter is offline  
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:43 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.09004 seconds with 9 queries