pre heat mold

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  • Last Post 28 May 2008
kdevine posted this 18 October 2007

any thoughts on pre heating molds w/ propane torch?

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CB posted this 18 October 2007

I know a guy who uses a hot plate to pre-heat his moulds while the pot is getting hot. I've tried it and it cuts down on time to get good bullets.

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454PB posted this 19 October 2007

I do it all the time, and have for 36 years. It doesn't hurt a thing if done properly

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dromia posted this 19 October 2007

Ditto above, I've done it also for years, iron moulds only, with no adverse effects I just keep the mould moving in the flame to try and keep the heat distribution even.

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kdevine posted this 19 October 2007

dromia, I was thinking as long as you dont rush or keep the flame in one spot it would not warp the iron mold. thanks. this might help get at least a few good lyman hollow points. KD

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Lloyd Smale posted this 27 October 2007

ive done it for years. It wont hurt a thing

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Dale53 posted this 16 November 2007

I have a hot plate that I pre-heat my moulds. My hot plate has a solid sheet metal cooking surface (I wouldn't put a mould directly on a calrod unit as I am afraid that differential heating might warp a mould or melt an aluminum mould). If I had a CalRod unit, I would simply lay a piece of sheet metal on the surface then rest the mould on the sheet metal.

At any rate, I turn the hot plate on, set it on “Medium” and place the mould on it at the same time I start up my lead pot. When the lead pot is ready, the mould is nearly up to heat. I could set the hot plate a bit hotter but I would rather do the final heating by pouring lead. At any rate, it only takes a pour or two to have the pre-heated mould up to temperature for great casting.

Dale53

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vmwilson posted this 29 November 2007

I made a warming shelf for my Lee pot out of 1/8” aluminum which also incorporates a thermometer holder. Definitely speeds up the casting process but you do want to keep the shelf small as possible to avoid any extra heat loss.

Mike

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jkingrph posted this 14 May 2008

I use an electric hot plate, piece of 1/4” steel plate on top, heat on med, place mold on steel plate.

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largecaliberman posted this 17 May 2008

Propane torch is fine as long as you keep the flame moving.  I usually keep the mold on the top of my Lee “dripomatic". Usually it takes around 30 minutes to get the raw ore melted and by that time, the mold is ready to go.;}

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R. Dupraz posted this 17 May 2008

I have used an old Lee five pound lead pot for quite a long time to preheat and maintain the mould temp when taking a break. By the time my twenty pounder is ready, the mould is also. Often can be found on rumage sales for practically nothing.

RD

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RANGERRICK posted this 25 May 2008

Yep a tourch will work just fine as said on previous replys keep the flame moving all over the mold .

It usually takes 40 minutes for my lead to be at casting temp and I put the 5 molds I will be using under the Magma pot and by the time I am ready to cast the molds are ready to go and up to temp.;}

 

RR

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CB posted this 28 May 2008

I use an old frying pan that is on a hot plate to heat up my molds. Mainly because if I was casting only one molds I would put it on top of the pot, as that I cast for hours, I find the frying pan a great help.

;}

Jerry

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