Injection Mold Tooling

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injection mold tooling:

Injection Mold Tooling

Question by xiren: Does plaster of Paris work in lost wax casting as investment?
I’m doing my first casting and so far I have a ring I carved from jewelers wax, a flask and flask base, everything’s sprued up, and Ive bought a ingot of casting pewter and all the tools to melt it. I was going to use plaster of Paris as the investment but I’ve been seeing mixed results with it and now im not sure. Ive decided to do the steam injection thing with just some wet cloth in a can pressed down over the flask and hopefully the steam should shoot the pewter through the mold.

Best answer:

Answer by Mike1942f
plaster of Paris will work for low melting point pewter but unless it is completely dry (and perhaps warmed) it will chill the metal and prevent it from getting into all the corners. You are providing vents and forcing the metal in from the bottom?
This page http://www.princeaugust.ie/alloys/ has melting point and casting temperatures for a lot of metals and way down at the bottom indicates that 375C is the highest temp the “moulds” will stand which I take to be PoP which starts to break down – look elsewhere on that site for a clue, although even on this detailed site http://www.miniaturemolds.com/instruc_.htm it does not discuss preheating the molds.
I use regular investment (from Kerr) and aluminum or bronze and haven’t done pewter, but would suggest heating the mold to about 200C for pewter. my site http://www.mikegigi.com/castgobl.htm

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Injection Mold Tooling

Molds in miniature: a shop that makes tooling for metal injection molding (MIM) relies on a machining center designed for micro-scale work.: An article from: Modern Machine Shop

This digital document is an article from Modern Machine Shop, published by Thomson Gale on April 1, 2007. The length of the article is 1314 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

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Title: Molds in miniature: a shop that makes tooling for metal injection molding (MIM) relies on a machi

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injection mold tooling:

Injection Mold Tooling

Question by Underwood: Autobody type work, I need help please.?
Hey, I’m 16 and I for sure have a full time summer job at RTM North… But, I’m trying to figure out what I can learn before I start working, so I can get better hours, and work on harder things… get paid more, etc. But, as it is now.. I know nothing. xD.

The job is basically, they make molds for companies. Fiber glass work. They make boat molds, bathtub molds, truck molds, any kinda mold xD.

So, If anyone could please help me out… giving me suggestions on what I should learn, sanding and stuff… or anything, I’d REALLY appreciate it.

This is what it says on their website.

Produces composite tooling, RTM and Lite RTM injection equipment, manipulators and RTM and Lite RTM hardware. Consulting, training and pattern making services.

Best answer:

Answer by nick f
having worked in the industry I would say its an on the job learning thing. that doesnt mean you cant learn elsewhere.

Learn all you can about molds of all types and composite molds in particular. Learn about fiberglass and resins and especially tooling gelcoat. Learn about matt and woven roving and other fiber types. there are many sites that explain all this stuff. Most suppliers of resins and fibers have literature you can have free.

One tip i would give you is NEVER wear synthetic fiber clothing in a fiberglass shop. 100% cotton only. Fiberglass itch is hell and synthetics make it 10 times worse. and get yourself some lanolin for your hands you ll thank me later.
I
ts easy to make an absolute mess in that trade so work extra clean and you can make it acceptable.

if you want to impress the guys then be the kid who is willing to learn and eager to do whatever is required, that will make them appreciate you. No one will mind if you keep asking to try things like rolling out or wetting out or whatever, keep learning and soon you ll be trusted with a chopper gun (which they likely use)etc.

That industry is one with a high turnover because of the chemicals, smell and fiber itch so half the battle will just be hanging in there. You DO get used to it after a while and if you stick it out, chances are you ll be the only one left standing.

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Injection Mold Tooling