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Making PVC Stuff?

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Making PVC Stuff?

Unread postAuthor: CS » Sun Oct 02, 2005 1:33 am

Ok first off I didnt know if I should consider this project non-spudgun or a spudgun project. It would be used for spudguns but the project wouldnt so thats why I choose the one I did (if you dont get what im talking about dont worry doesnt have any importance.)

Ok I was wondering if I could possibly make stuff out of PVC and molding it to the shape I want. Hopefully someone could tell me if it is even possible to reheat PVC and the remold it? One more question does anyone know the temp needed to melt the PVC and how much pressure (psi) should be used? If this is possible this is what I plan on doing.

Background Info: My dad is a jeweler and has a wax injector capable of getting somewhere around 250 F/120 C and then pressures of 0-35 psi. So today I was talking to my dad about some of his tools and some how we started talking about his wax injector and the idea struct me of using PVC shavings then injecting them into molds (possiblites are endless!) Normally with this machine you put in wax beads then melt them and then inject them into a mold so I was hoping that I could do this with PVC.

There are picture below of the process described below at the bottom of the post that are numbered in the correct order (For some retarded a** reason the attachments wont go in the right order. I posted them in the right order.)

This is what I plan on doing if everything works out. First I will get PVC scraps and then turn them into shavings. Then I will take the top of the injector and dump the shavings in then I will heat them to (?) and pressurize them to (?) psi. Then I will take a mold made out of wood or something and then put a small hole in mold just like you would on a rubber mold. Once done with that I will inject the plastic into the mold by putting the nozzle on the injector in the open hole one the mold. Then allow the plastic to dry for (?) and then hopefully end up with some nice PVC stock ready for maching!


Any Comments/ Suggestions would be greatly apprecated. (?) means I dont know what the answer is and if you know please let me know.
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Attachments
PVC Machine Stock.JPG
(7) Final Product that is ready to be machined.
PVC Machine Stock.JPG (7.19 KiB) Viewed 1651 times
Wax Injection Arrow.JPG
(6) Wax Injectors Nozzle.
Wax Injection Arrow.JPG (4.89 KiB) Viewed 1651 times
Wax Mold.JPG
(5) These are rubber wax molds. The red arrows are pointing to the holes that fit on the nozzle that I will incorperate into my molds.
Wax Mold.JPG (3.54 KiB) Viewed 1651 times
Mold.JPG
(4) This represents the mold that I will make. Hint: This is not what it will look like. Most likely will be made out of wood.
Mold.JPG (7.72 KiB) Viewed 1651 times
Wax Injection Top.JPG
(3) Wax Injector Top. This needs to be removed to pore in the PVC shavings.
Wax Injection Top.JPG (5.37 KiB) Viewed 1651 times
PVC Shavings.JPG
(2) PVC shaving that will be dumped into the top of Injector.
PVC Pipe Cut Offs.JPG
(1) PVC cutoffs ready to be turned into shavings.
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Unread postAuthor: aetherguy881 » Sun Oct 02, 2005 5:58 pm

Mold is spelled mould in this case and maching? ooohhhh you ment making.
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Unread postAuthor: clide » Mon Oct 03, 2005 12:30 am

aetherguy881 wrote:Mold is spelled mould in this case and maching? ooohhhh you ment making.


...if you're going to be a spelling nazi at least make sure you know what you are talking about.

<a href="http://dictionary.reference.com/search?q=mold">mold</a>
# A hollow form or matrix for shaping a fluid or plastic substance.
# A frame or model around or on which something is formed or shaped.
# Something that is made in or shaped on a mold.
# The shape or pattern of a mold.
# General shape or form: the oval mold of her face.
# Distinctive character or type: a leader in the mold of her predecessors.
# A fixed or restrictive pattern or form: a method of scientific investigation that broke the mold and led to a new discovery.

"maching" was a typo for machining, not too hard to accidently leave out the extra "in"
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Unread postAuthor: frankrede » Thu Sep 21, 2006 8:18 pm

So you are gojng to make custom fittings?
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Unread postAuthor: frankrede » Thu Sep 21, 2006 9:14 pm

Hmm what a coincidince, clyde, is your name Derek?
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Unread postAuthor: daveo » Fri Sep 22, 2006 12:43 am

Here is some info I have found. I know from past That after it is re-melted it gets brittle. The info that I am listing is for pvc I not pvc II. And there is some good info here also http://www.pvcinformation.org/



Flash Ignition Temp 730°F
Burning Rate (in/min) Self Extinguishing
Softening Starts, (approx.) 250°F
Material Becomes Viscous 350°F
Material Carbonizes 425°F


Oh yea do a search on Cerro-Bismuth Alloys This stuff is linda like solder. It is metal, so if metal is not an option dont worry. But the melting point is low anywhere from 151 f to 300 f. Hope this helps, Dave
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Unread postAuthor: killagorrila99 » Fri Sep 22, 2006 12:57 am

WOW! Thats an amazing idea, Pimp. I think you should be proud!
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