Making me some new fairings i Am

[Pixie]

That will work.A compressor can be used as a vacuum pump

[sprocket]

yes well this project has been a bit long in the tooth now, as other commitments have ment that i have had to put it on the back burner, however i will endure to bring you all an update with in the next week, im in two minds wether to use epoxy or polyester clearcast, I have done some more research in prepreg but am at a dead end when it comes to an autoclave.......I vow to you that the one fiddy will have something carbon on it before the year is out

[smokinrubber]

Thanks Pixie, have you seen it work ? It would need to get to 20" - 28" Hg vacum pressure from what i have read. I believe this is required for more complex shapes, like a screw recess in a guard for example. Am i on the right track do you know ??.

[Ghost Lemur]

Have you been following that thread that was posted earlier on Sproket? That guy knows his shit. May be worth registering on their forums and pm'ing him some questions if you hit a wall.

I'm certainly looking forward to some updates.

[Pixie]

I'm doing a front mud guard extension at the moment and took a pic of the vacuum bagging.
This is under 24" of vacuum.
After a few minutes the vacuum will flatten out the creases that are visible and force the resin out to all the extremities of the mold and cloth.Actually I'll correct myself and say that it is atmospheric pressure that does this.I'm a pedant.So sue me.

[Bloody Mad Woman (BMW)]

I have found this fascinating - that is pure skill! look forward to the updates. I have just had my front fairing done - the bottom part the guy has yet to pick up.

[vifferman]

I'm doing a front mud guard extension at the moment and took a pic of the vacuum bagging.
This is under 24" of vacuum.

So what stops the bag sticking to the resin? Or does it not matter?

Oh - and by the way, peoples: I hate to be a SafetyNazi (because we hatesss SssssaffffetyNazzzissss, yess we doessssss) if you're making your own vacuum system, you HAVE to have the tank and the valves each side, as using a vacuum cleaner directly would mean sucking resin fumes into the cleaner, and we know what THAT means (even though MuthBysters(TM) didn't manage to get one to explode, doesn't mean it can't happen....)

[Pixie]

So what stops the bag sticking to the resin? Or does it not matter?

Oh - and by the way, peoples: I hate to be a SafetyNazi (because we hatesss SssssaffffetyNazzzissss, yess we doessssss) if you're making your own vacuum system, you HAVE to have the tank and the valves each side, as using a vacuum cleaner directly would mean sucking resin fumes into the cleaner, and we know what THAT means (even though MuthBysters(TM) didn't manage to get one to explode, doesn't mean it can't happen....)

The bag peels off the cured resin and is disposed of.
I use a vacuum pump.I don't think a vacuum cleaner achieves a very high vacuum

[Pixie]

This is the cured cast,removed from the bag and the mold.
Next step is to trim the edges and paint

[jade]

[QUOTE=vifferman;843892]So what stops the bag sticking to the resin? Or does it not matter?

QUOTE]
Resin wont stick to plastic, or anything shiny for that matter, for instance if you had a cured piece of resin or cloth and it was shiny - you would have to sand it or grind it before you could bond to it

[smokinrubber]

How did you get on with your economy vac pump & set up ??. Can any one advise on a cheapish set up either with a proper pump set up or an alternative that does work ??. I have made a couple glass molds & are ready for having a go with vac bagging.