Global Polytec Ltd.,Part.

Posts Tagged ‘small’

Question by Oliver: Why do tires have small extrusions?
Every tire I have seen has small, cylindrical extrusions all around the tire. They are located on the tread of the tire. Why are these here? Are they left over from the injection mold process or something?

Best answer:

Answer by Dennis
Yes.

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Mechanical Decapsulation of a small (3mm) plastic part with a 0.4mm milling tool on ASAP-1 IPS
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Question by Shwig: Painting tips needed on a plastic shroud cover on a small engine……?
I have a B&S small engine with a plastic shroud and I need tips on how to paint it properly. It is injection molded plastic, black and I am going to camo.

Best answer:

Answer by quillologist
Is the surface smooth? If it is, rough it up with 80-grit sand paper. Clean the surface really well, and then wash prime, or use a self-etching primer, then regular primer. Sand with 180 initially and then reprime if necessary. You’ll want to finish sand with 400 grit. If it has a “bumpy surface,” you’re not going to be able to rough up the surface. After you do the priming, just use a scotchbrite pad to sand. I painted my truck last year, including the inside plastic molding, which had the bumpy surface, and the plastic windshield wiper arms, which had the smooth surface. Paint is still on there and looks good.
If it’s too close to the engine, it will burn off.

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Question by $i: A rough ball park figure for the cost of an injection moulder for small components? (Including everything.?
I just wanted to know out of interest how much plastic injection moulders cost designed to produce small components (the size of a brick.) Including the mould and all of the machinery. I’m just looking for a rough estimate (£100,000? £1000,000?) Thanks.

Best answer:

Answer by vicks
Well ..normally injector cost around 80k-100k
but it depends what company are you going with ….
my uncle went to auction is chicago..there he found a rooler or 106,000 dollars and at same pace in auction the chinese roller or same function and same size in just 6000 dollars

So depends ..my friend

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