Sanding Discs!

C

Comm - Mikal

0
Hi all, i'm in the process of sanding back the van in prep for painting:p;)
I have purchased the Orbital Sander and i know that i'm going to use a lot of discs. I have already started sanding and am using p100 grit discs. Are these the way forward or should i be using a different grade? I know that to smooth things off nicely after the old paint is removed i want to be using p60's but i just want to know if p100's are my king? ;)
 
Just a couple of things !
P60's are ROUGHER than p100's as it works by counting the number of grits per inch (60 grits per inch 100 grits per inch etc )

Un-less you mean p600 which are what you should be using to finish before hi build primer !

p100 might be a bit too aggressive over filler and you might find that you will have to re-fill old repairs after. But if you are going back to steel then it should be fine.

If you are going back to steel you will have to etch prime it before high build primer ! Its also worth pointing out that the stuff you can buy now is not a patch on what would have been put on at the factory 40 years ago !

If the paint is sound then its best left alone as its better than any modern primer you can buy !
 
HAHAHA, yes i meant p600's, blimey imagine getting a smooth finish with a p60:D
The van has been hand painted previously so i'm just after taking that off to be honest. It's pretty thick and uneven in places. I'm having some success in keeping the old primer on by being carefull whilst sanding so it saves having to re-prime it. There are patches where i have gone down to bare metal which i will use a primer on but these are isolated to patches only.
Just wanted to know roughly how many discs i'm likely to go through so i can buy sufficiant amounts at bulk price:)
Thanks for the answers though;)
 
Lots:I

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Two's company
 
Use the left handed ones for the nearside and the right handed for the offside;)

th_DCP_9909.jpg

Two's company
 
Surely it depends which way the sander orbits?

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Spare a Commer Guv?
If I told you I was a pathological liar, would you believe me?
 
Hi thought so but you never know sometimes:)

Depending on what it has been brush painted in it might be best to seal it with primer to save it from spoiling your top coat!

Some synthetic paints will leave oils in the primer which will react with anything other than other oil based top coats

Just mention it as its much easier and less annoying to flat primer than fresh shiny top coat !
 
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