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Author Topic: Investment cast mounts  (Read 1337 times)

Offline Ron Scott

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Investment cast mounts
« on: January 09, 2022, 04:46:00 AM »
I am in process of making molds for my June seminar and thought there might be some interest in seeing the butt cap for the pistol (wax). Using Silicone and plywood frames for limited production parts is reasonably  economical.


d20 dice drawing
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Offline Carl Young

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Re: Investment cast mounts
« Reply #1 on: January 09, 2022, 05:14:57 AM »
That looks really good. It has been about 30 years since I cast anything of consequence and I'm sure techniques have improved. I have a friend (who is in quality control for rocket motors) who has started a small foundry, but right now we are covered up with casting industrial and/or antique parts in iron with sand molds. Hope to get some brass done later this year. I don't want to be "in the business", but hope to develop another supplier who will cast what we want for our type of guns.

Ron, if you are so inclined, I would like to see how you make your master mold. I get the silicone rubber part, but I'm not sure how you use plywood?


Anyhow thanks for posting!
Carl
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Already long ago, from when we sold our vote to no man, the People have abdicated our duties; for the People who once upon a time handed out military command, high civil office, legions — everything, now restrains itself and anxiously hopes for just two things: bread and circuses. -Juvenal

Offline James Rogers

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Re: Investment cast mounts
« Reply #2 on: January 09, 2022, 05:16:38 AM »
Very nice wax!
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Birddog6

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Re: Investment cast mounts
« Reply #3 on: January 09, 2022, 08:01:03 AM »
I wish I had know that. I just sold over a ton of yellow brass I have saved for years. 
I have some more that will go when I get time to mess with it. If that is of interest, I
can mail you a small sample.
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Offline davec2

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Re: Investment cast mounts
« Reply #4 on: January 09, 2022, 08:37:14 AM »
Ron,

I did the same thing after visiting Jerry Huddleston some years ago and seeing how he did this sort of thing.  I skipped the wood box and just used a piece of schedule 80 PVC pipe. I cut a gentile taper on the ID of the pipe on the lathe so that the mold is easy to get in and out.

Original:



Original cut from mold:



Getting ready to pump a wax pattern



Pumped wax:



A few spare wax patterns:




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"No man will be a sailor who has contrivance enough to get himself into a jail; for being in a ship is being in a jail, with the chance of being drowned... a man in a jail has more room, better food, and commonly better company."
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Offline Curtis

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Re: Investment cast mounts
« Reply #5 on: January 09, 2022, 08:43:07 AM »
Looks like perfection, Ron!!!



Curtis
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Curtis Allinson
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Sometimes, late at night when I am alone in the inner sanctum of my workshop and no one else can see, I sand things using only my fingers for backing

Offline P.W.Berkuta

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Re: Investment cast mounts
« Reply #6 on: January 09, 2022, 09:07:36 PM »
Gosh - you guys are smart and handy ;) 8) ;)
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"The person who says it cannot be done should not interrupt the person who is doing it." - Chinese proverb

Offline JBJ

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Re: Investment cast mounts
« Reply #7 on: January 10, 2022, 03:39:05 PM »
P.W.
That's an understatement! The talent so many of these guys have fairly boggles the mind!
J.B.
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