The usual method of releasing the finished form from the mould tool is to reverse the air.. Just rig it so you can give a short 'Blow' into the vacuum area, it will release easier.. 14 years of Vac forming & injection moulding at Vauxhall Motors ;-) Steve
I design and program and machine thermoforming/vac/injection professionally. My advice for you is, start with a bondo material. Sand it reel fine. Drill vacuum hole along the tight detail line on the mold and along the contour of the part. Space the vacuum hole 2-3inches apart. Clear plastic forming, the mold will need to be polished nicely otherwise it will appear on the part. And don't forget to make a plug assist to force the plastic down into tight area.
Some suggestions - seal the concrete with some sealant first. Also put some screw holes in the bottom of the concrete piece so when it is done you can insert some screws to remove it more easily. Did you use any release agent? The sealing of the concrete would have made it release much more easily as well.
Next time try spraying a thin layer of cooking spray on the mold first. Also, it might have helped to embed some handles in the front and back of the bottom of the mold to make it easier to pull out.
ok so instead of bashing you bro i have a idea you should wax or or use a high gloss paint an enamel that shit up buttery smooth so then it doesnt grab the pores! gl an gj man or make a new mold from plaster lol
everything in this video is wrong... i've never saw a video that wrong!!!... ciment moudling, too big, too hot, not horizontal... this little guy constantly touching hot plastic and putting his hand when you are about to cut things . plus the music and the poor image quality... bro I need to tell you 8 years after this... you are the champion... ^^
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The usual method of releasing the finished form from the mould tool is to reverse the air.. Just rig it so you can give a short 'Blow' into the vacuum area, it will release easier..
14 years of Vac forming & injection moulding at Vauxhall Motors ;-)
Steve
you need to use a warm thick clear lube it makes getting the lexan off the mold almost effortless. Make shore your mold is smooth.
I design and program and machine thermoforming/vac/injection professionally. My advice for you is, start with a bondo material. Sand it reel fine. Drill vacuum hole along the tight detail line on the mold and along the contour of the part. Space the vacuum hole 2-3inches apart. Clear plastic forming, the mold will need to be polished nicely otherwise it will appear on the part. And don't forget to make a plug assist to force the plastic down into tight area.
ever try reversing the air flow on your vacuum while holding down the frame to realise mold after it cools down of course
Some suggestions - seal the concrete with some sealant first. Also put some screw holes in the bottom of the concrete piece so when it is done you can insert some screws to remove it more easily. Did you use any release agent? The sealing of the concrete would have made it release much more easily as well.
+Nick Doe his problem was he got wrap around whe the plastic formed around his mold and under it making release difficult
use compress air on the side flap to release it.
Just a heads up, a little compressed air would have made it easier to remove to mold from the original piece.
@Andrei2j Good idea, thanks. I could put the aerial hole in the top and see if that works better to remove the mold.
Hahahaa. Thx for the laugh. Now I know what not to do.
U need a spacer plate under your mold just a bit wider then the mold and it will come right out.
maybe you could try to apply something on the mold first that makes the plastic come off easier
Next time try spraying a thin layer of cooking spray on the mold first. Also, it might have helped to embed some handles in the front and back of the bottom of the mold to make it easier to pull out.
Hello,very nice ;)
What size of the material did you use to make a car body?
what kind of plasticis this? poliamide carbonate propilene.....poly
tnks
is it polycarbonat?
hi how powerful vacuum cleaner to use? How many watts?thank you
Nice project. How did you made that mold?
what kind of plastic sheets ?
I think itis polyathelen low density
can u do it to make a stoplamp for cars? thanks
I know the video is old has you process gotten better?
How or where do you get the molds?
Dude, use a mold release agent.
compressed air he said, that is it. basically opposite of what you did first time around.
Wooooow! Whats the song playing?
Что это за покрытие?
cut the mould in half so it can be taken out in two pieces
'
that coool homemake molding plastic body...
how about similar traxxas summit body 1/8 or 1/9 scale
ok so instead of bashing you bro i have a idea you should wax or or use a high gloss paint an enamel that shit up buttery smooth so then it doesnt grab the pores! gl an gj man or make a new mold from plaster lol
It's lexan for rc car bodies
where's a good place to go get plastic sheets
everything in this video is wrong... i've never saw a video that wrong!!!...
ciment moudling, too big, too hot, not horizontal...
this little guy constantly touching hot plastic and putting his hand when you are about to cut things .
plus the music and the poor image quality...
bro I need to tell you 8 years after this... you are the champion... ^^
Half the video de-molding the damn plastic !!!
Thicker? 0.5mm or 0.75mm
Found 0.75mm polycarbonate on Ebay but do not want to waste my money if it is to hard to work with.
GOOG SOUND!
Man thats an atrocious shell.. use plaster for your mold and sand that shit!
you didnt no how to take off
Concrete is to porous
+Johnny Crosby Plaster of Paris is the way to go.
Fail
Looked at your attempt.. Nice effort..
what kind of plastic sheets??