7 replies to this topic

[James_eaton_thewholething]

So I have been using u-pol extra as my filler of choice but after sanding it has left a few scratches in the filler.

Is holts knifing putty you can buy from halfords OK to use or should I use something else ?

For other alternatives if people can let me know the best place to buy it from. Cost isn't an issue as I need the best surface possible before high build primer

Thanks for reading

[ChopperHarris]

only use a 2 pack stopper, to prevent shrinkage.
However you should be spraying a high build primer over these areas if not the entire car

Edited by ChopperHarris, 05 March 2016 - 11:31 PM.

[Daz1968]

When I did my mk1 I used upol gold glaze, it's 2k like filler whereas normal stopper is cellulose and can sink or react. Think they do another one called dolphin glaze, am pretty sure I just bought mine off eBay, will be using same stuff on my mk2 as it's very good. I will also use epoxy high build not cellulose as it's also a good product.

[eknight91]

Kniffing putty is ok, best sanded dry as it tends to peel away if it gets too wet. Does take ages to set though. What grit sand paper are you using on the filler?

[minidaves]

Hi build primer takes the scratches out that's the idea of it

[James_eaton_thewholething]

only use a 2 pack stopper, to prevent shrinkage.However you should be spraying a high build primer over these areas if not the entire car

It will be sprayed in high build primer

While car will be sprayed in high build.

Kniffing putty is ok, best sanded dry as it tends to peel away if it gets too wet. Does take ages to set though. What grit sand paper are you using on the filler?

Started with 80 and got finer once the bulk of it was off but still some minor scratches and issues that I want to solve with a lighter filler.

When I did my mk1 I used upol gold glaze, it's 2k like filler whereas normal stopper is cellulose and can sink or react. Think they do another one called dolphin glaze, am pretty sure I just bought mine off eBay, will be using same stuff on my mk2 as it's very good. I will also use epoxy high build not cellulose as it's also a good product.

Will get some of that then and get it into the small annoying areas to get a really good finish before high build to remove others from the rest of the car


Thanks everyone

[midridge2]

I have been using knifing putty (stopper) for 46+ years and never had a problem with it,    let it dry and it rubs down with water with out peeling, again if left long enough you will not get shrinkage.
It all depends on the size of the scratches, to big and high build primer will not fill them.
Yes you can use 2pack stopper but knifing putty is a lot cheaper and does the same job.

[ChopperHarris]

I have been using knifing putty (stopper) for 46+ years and never had a problem with it,    let it dry and it rubs down with water with out peeling, again if left long enough you will not get shrinkage.
It all depends on the size of the scratches, to big and high build primer will not fill them.
Yes you can use 2pack stopper but knifing putty is a lot cheaper and does the same job.

If it works for you, fair comment.

But things move on, that's why 99% of bodyshops use 2 pack. If you need more than a spoonful of stopper per car then theres something wrong with the quality of filling going on. Why wait for air drying in a 2 pack world to save £2?

Some old school things are still relevant today, like leading, but the classic car garages still use 2K to finish off.

 

Best way to deal with scratches as the OP describes is to use a paintbrush or roller over the area, two are 3 coats of high build 2K

Mixing a celly or airdrying product in todays world is pure folly