Some parts I'm making for a Cobalt

Post by **eHoward** » Mon Feb 06, 2006 9:07 pm

That's part #1. Hopefully I'll fill this thread up with other stuff as we make it.

This is using a new resin system that doubles as a UV protectant.

Best surface finish yet. I'm really happy with the results.

Series8217 · Post by **Series8217** » Mon Feb 06, 2006 9:38 pm

Cool!

How much does that rear fascia weigh compared to the factory piece?

whipped · Post by **whipped** » Mon Feb 06, 2006 9:38 pm

did you just glass... er... I guess fiber over the original? Make a mold?

Post by **eHoward** » Mon Feb 06, 2006 9:49 pm

this is the mold:

this is the original bumper:

this is the mold being laid up on the original bumper:

the part being vacuum bagged in the mold:

I guess i could put those in an order that makes sense but I wont.

Post by **eHoward** » Mon Feb 06, 2006 9:50 pm

dunno how much that part weighs yet as it's not finished.

factory piece weighs 10lb 3oz.

Series8217 wrote:Cool!

How much does that rear fascia weigh compared to the factory peice?

whipped · Post by **whipped** » Mon Feb 06, 2006 9:56 pm

what kind of vacuum system do you have? Shop vac? Roughing pump? Cryogenic vacuum diffusion pump? :la:

Along the same line, what kind of vacuum do you have to pull?

Post by **eHoward** » Mon Feb 06, 2006 10:15 pm

The pump is blue.

I try to pull 20 plus inches.

This deformed the mold at 12 so we backed it off to about 7. If i use the mold again, i'll make it more rigid.

whipped wrote:what kind of vacuum system do you have? Shop vac? Roughing pump? Cryogenic vacuum diffusion pump? :la:

Along the same line, what kind of vacuum do you have to pull?

The Dark Side of Will · Mon Feb 06, 2006 10:21 pm

I was thinking that the mold looked pretty flimsy...

whipped · Post by **whipped** » Mon Feb 06, 2006 10:31 pm

eHoward wrote:The pump is blue.

:rotflmao:

well, now that that's settled...

Post by **eHoward** » Mon Feb 06, 2006 10:54 pm

Only pic i could find of my pump:

whipped wrote:
eHoward wrote:The pump is blue.
:rotflmao:

well, now that that's settled...

whipped · Post by **whipped** » Mon Feb 06, 2006 11:19 pm

Nice. Looks like it's a piston pump? I've got a 2 stage rotary pump about the same size that pulls down to 0.5 micron. It WILL suck a golf ball through a garden hose, or the fillings out of your teeth. But it's also got some kind of internal oil leak, so after about 10 minutes of running, it hydrolocks, then you gotta disassemble it. Piece o' shit, but I got it for free, so I can't complain.

btw, it's got 10,000:1 compression. How do you like them apples? :salute: