Anyone have the I.D. of a Magma 40lb lead pot?

[PatMarlin]

Looking for the inside diameter and height dimensions of a 40lb Magma pot, or any other brand.,

Trying to get an idea of the size for 40lbs of melted lead.

Thanks.. Pat

[Shotgun Luckey]

I know a #10 tin can full of boolits is about 35 pound...likely to be 40# of melt

[GabbyM]

Inside diameter of the 40lb Mama is 5.1" . Height is about that or shorter. Have to wait until tommorow when the lead melts to shove a stick in it.

[Russel Nash]

using the Mayco Industries Lead Calculator here:

http://www.maycoindustries.com/Calculators/geometry_xls.htm

I punched 2.55" for the radius and then 5 inches for the height of a cylinder and it calculated it at 42.58 pounds.

I don't have one of those Magma 40 pounders.

I just like doing the math.

Well, actually, the software did the math for me. :razz:

[Chunky Monkey]

Thats a pretty slick little calculator Russel! :bigsmyl2: Thanks for posting a link!!

[PatMarlin]

Hmmm.. those numbers don't seem to jive, cause a RCBS PRO melt is 20 lbs. and the pot is roughly 4"x6".

[Red River Rick]

Pat:

FWIW, lead weights approx 0.409 lb per cubic in, so you'll need roughly 98 cubic inchs of volume. So a 5" x 5" piece of pipe will work out just about right. Adding a extra couple of inchs of length will allow for expansion and some safety margin if your making a pot.

With the 4" x 6" (75.3 cu in) dimension of the RCBS Pro melt pot, if filled right to the brim, it should hold 30lbs.


RRR

[Russel Nash]

PatMarlin wrote:


Hmmm.. those numbers don't seem to jive, cause a RCBS PRO melt is 20 lbs. and the pot is roughly 4"x6".


I guess I could measure mine.

I checked it last week because I was going to weld up some ingot moulds.

I didn't want an ingot so long that it stood too far up out of the pot.

And coincidentally, I wanted to store my ingots in .50 cal ammo cans. So I settled on a length of 5 and 3/8ths inches to cut the channel iron to make my moulds.

I also measured the diameter of the pot with a credit card. I don't think it is quite 4" across.


going back to that calculator link I posted, a 1 inch by 1 inch by 1 inch "rectangle" according to them weighs .42 pounds.

[Red River Rick]

going back to that calculator link I posted, a 1 inch by 1 inch by 1 inch "rectangle" according to them weighs .42 pounds.

Yeah, your right. However, if you plug in 2.5" for the radius and 5" for the height, the cylinder calculator gives you 40.92 lbs.

Actually, pure Pb weights 0.4088 lbs per cu in.

RRR