Talk Composites - The Forum for Advanced Composites

Resin not laying correctly in the mould?

http://www.talkcomposites.com/Topic14827.aspx

By JaseYPK - 1/28/2015 8:39:21 PM

Hey,

So ive tried using a new mold made out of a plastic tub. Sounds crude but there is reason. 
Either way, the epoxy resin isn't laying flat inside it as I've seen it in other moulds. It's spreading and creating holes, as if it's oil in a pan. Could it be the release wax being too thick? (3 coats), I've never seen it before so I'm assuming it's got to be the wax or mould. 

Help please as I don't want air pockets and shoddy parts!!

Thanks
By fgayford - 1/31/2015 1:02:13 PM

JaseYPK (31/01/2015)
fgayford (30/01/2015)
[quote]

Glad you had success right away.
I was where you are right now. Here is how you can get a vacuum pump for free.
Get any refrigerator or freezer from the scrap yard or on garbage day. Take out the pump assembly for that is all you need.
There are 2 tubes going into the motor. One pumps one sucks.
Once you have cut the tubes off simply connect this to your home made catch pot and your golden. I used this setup for a long time and it pulls a good vacuum, enough to crush styrofoam. It won't last as long as a proper pump but you will get many hours out of it.
Hope this helps
Fred    


That sounds brilliant thanks! I'll keep a lookout for a fridge! Our scrapyards over here in the UK won't let you take anything, they're generally collection only, then recycle. But I can have a look anyway! Thanks for the tip!


Over here in Canada they are put out on special garbage day pickups. You can google instructions on how to convert it. There are tons of stuff on youtube.
Fred