Talk Composites - The Forum for Advanced Composites

Newbie Needs Help With a Mould

http://www.talkcomposites.com/Topic24847.aspx

By robenergy - 1/8/2018 7:54:26 AM

Hello Everyone,

Basically, I've had a go at running before I can walk and stumbled into a problem or 2 I'm hoping somebody can help me with.

The first mould I've had a go at making is for a roll top bath which wasn't going too bad until I had to use Reface to fix any high and low points.
I had never used a spray gun before and didn't do any practice pieces beforehand, I just made sure the gun sprayed properly and jumped in and went for it.

The gun worked okay briefly and then I started having problems with intermittent spraying and no matter what I done, I couldn't get it working properly.
After trying various things the gun seized and was ruined. My fix for this was to brush it on and in my naivety I didn't think it would be too bad... :/

I've gone upto a 40 grit paper and leveled out the brush marks/high points pretty well but, now I have low points where wood is showing through (only a couple of places and nothing too major) and high points where it's still pretty thick Reface (in the corners and where the base meets the walls of the tub) and obviously the scratches from the 40 grit paper..

What I'd like help with is, how is it best to save my hard work, does anybody have any pointers/do's/don'ts before I destroy things further? Should I sand things down and use a paint roller to put on another coat of Reface and start again to a certain extent?

I was thinking to carry on sanding down with finer grit paper, go over any bare bits with more reface (and there maybe a couple of bits that could do with a thin layer of filler first?), and blend it all in with some fine grit paper..

What does anybody think? Any help/ideas are greatly appreciated.. And yes, I know I've been a bit of an impatient arse about all this and I will organise a spray painting course as soon as money permits!

Thanks for your're time reading this, I hope you can help. Rob
By robenergy - 3/10/2018 10:08:09 AM

 
Hanaldo - 1/9/2018 10:13:11 AM
The Scott Bader stuff works fine for brushing, there's no dramas there. It needs to be thinned with MEK for spraying, so straight out of the tin it's a tad on the thin side but still ok for brushing.


Hey Hanaldo,

I'm in need of some help if you've got a minute. I've used the Scott Bader Primecoat (nice one for the heads up!!) and used a brush to put 2 coats of the Scott Bader Glosscoat on.. Now I'm left with brush marks that go quite deep and in areas I've managed to sand through to the Primecoat in a couple of small patches... Question is,, can I spot fill the Glosscoat and sand it down/blend it in? Or is it the same as sanding through on the Primecoat, I've got to put a complete fresh coat on??

Thanks in advance for any help

Rob