|
|
Post by jfc on Jun 18, 2008 10:07:11 GMT
I have flatted back the hull or the runaround project with 320 grit wet and dry . Someone mentioned it feels like glass and asked what the paint is going to stick to . I think i sort of agree but .... I worked with a decorator who used to flat back his work like this and then mix pure turps in with the paint . He would flat back and recoat a few times and the finish he got was amazing . He said it's how the used to hand paint cars . I dont know enough about paints and finishes so i thought i would ask here  Is getting the base like glass a good idea ? |
|
|
|
Post by paulchapman on Jun 18, 2008 10:35:41 GMT
About 37 years ago when I used to go to the DIY show in London, Humbrol had a stand there and there was this old bloke who used to have various pieces on show that he painted by hand, using a brush, and it had the best finish I've ever seen. He used to always rub down with wet 'n dry between coats. I think the paint will stick OK, provided you've rubbed it down well and it's matt. Cheers Paul |
|
|
|
Post by tusses on Jun 18, 2008 10:42:58 GMT
for cars - its not unusual to flat with 600 grit before giving another coat.
it might feel like glass - but as long as the scratches are bigger than the paint molecules then it should 'key' ok
if it looks shiney like a mirror _when dry_ then I would say that looks like glass and the paint will have trouble sticking.
it does, to a degree, depend on what you are painting over too. very hard old paint fully cured will need more of a key than when you have put your 1st coat on and its less than a week or so curing.
Etch primers help for the 1st coat of some materials.
|
|
|
|
Post by engineerone on Jun 18, 2008 15:56:19 GMT
jason, it shouldn't cause any problems. not with 320. might be worth getting a magnifying glass to have a look, but frankly in wood can't see the problem, except of course some modern paints, not boating ones necessarily, maybe need quite coarse finish to adhere. certainly in cars whether then or now, one tends to have as perfect an underfinish to ensure the top is better., not least as an easier way to see the flaws in your surface. of course on the hull should you not be using an anti foul paint, and if so does that have different needs???  good luck paul |
|
|
|
Post by jfc on Jun 18, 2008 17:16:42 GMT
No the boat wont be kept in the water all the time so we will probably be using a hard racing paint and cleaning it off after use .
Paul , it looks like you have seen the same hand finish as me .
|
|
Is getting the base like glass a good idea ?
