Mold cavity coating?

[farmboy]

Just bought a used aluminum mold that has the cavities coated with a black ...almost looks like paint substance. Anyone know what it is?( brand name) If you have something similar, does it work okay? I have seen other molds with this but always on aluminum molds.

 

[Wasalmonslayer]

I have used this product as a mold release with great success!
Clean the mold well heat cycle once coat the whole mold light and blow off excess with compressed air heat cycle again and off to the races.
Bullets fly out of the cavities no tinning of brass molds and no size reduction of the final bullet.

https://www.amazon.com/Stens-752-922-Lubricant-Compatible-Replacement/dp/B000CPJLE4/ref=mp_s_a_1_1?adgrpid=64507706308&hvadid=274688432775&hvdev=m&hvlocphy=9011917&hvnetw=g&hvqmt=e&hvrand=8724090514380169604&hvtargid=kwd-316186989768&hydadcr=24477_9910923&keywords=liquid+wrench+dry+lubricant&qid=1707065863&sr=8-1

 

[358156 hp]

It isn't by chance an NEI mould is it?

 

[farmboy]

Yes it is a NEI 44 mold SSK 2 cavity.

 

[358156 hp]

Walt at NEI used to recommend push a colloidal graphite mould lube that he mainly recommended for the cavities. Most NEI moulds I see anymore have it. It doesn't wash off, believe me. I think he was repackaging Neolube #2, a colloidal graphite in isopropanol.

 

[Txcowboy52]

Just bought a used aluminum mold that has the cavities coated with a black ...almost looks like paint substance. Anyone know what it is?( brand name) If you have something similar, does it work okay? I have seen other molds with this but always on aluminum molds.

Frankford Arsenal makes a bullet release spray that is a dark gray almost black in color.

 

[bosterr]

Just bought a used aluminum mold that has the cavities coated with a black ...almost looks like paint substance. Anyone know what it is?( brand name) If you have something similar, does it work okay? I have seen other molds with this but always on aluminum molds.

I talked to a fella just last week who told me he sprayed a new Lee .30 cal. mold with graphite. When I asked him why he did that he replied, "I don't know, it's just something I always did".

 

[fiver]

oh it's black.
i loaned a mold out once and it come back coated with the stuff.
wouldn't have cared about the outside and top of the mold so much, but the inside didn't need it.

 

[358156 hp]

Frankford Arsenal makes a bullet release spray that is a dark gray almost black in color.

NEIs stuff was applied with a Q-Tip. I only use spray graphite for ladles and such. I tried it on moulds and it caused more issues than it solved.

 

[Georgia Boy]

I have used NEI Mold Prep sparingly in the cavities. It can help with a new mold, and it wears off slowly. By the time it wears off the mold is broken in and no longer needs it. Any change in diameter is not noticeable.
Avoid spray-on mold release compounds. They work by reducing fill-out, you get smaller bullets. They build up on the mold faces, you have a double layer there, you get out-of-round bullets. They fill in the vent lines. Yes, release was improved, the bad bullets fell right out! One spray-on was very difficult to remove.
The instructions with new LEE molds are specific:
"DO NOT USE DROP OUT MOLD RELEASE SPRAY."

 

[CWLONGSHOT]

I watch a channel on uTube from So Carolina. Wade Rush is fellas name. He does mostly all shotgun stuff. Then mostly buckshot. He must own stock in graphite spray... I chuckle watching him make a mess with ghe stuff. Soaking a brand new Marty's buckshot mold... works for him I guess.

I was taught it was never needed and fount that to be true. If I have drop out problems Its one of two things. Temperature or a burr. Both easily fixable W/O any spray or coating.

CW

 

[358156 hp]

It's a chemical treatment for a mechanical issue. I do however, still use just a touch of smoke in the cavities at times. Not very often, usually with a new mould while we're getting acquainted.