26-01-2020, 12:58 PM
Like Ian, I use 2K paint for any bigger spraying job now. The paint finish is both hard and tough. It has much more filling ability than cellulose so is a lot less likely than cellulose to reveal fine sanding marks in the finished job when the paint hardens. It can be flatted and compounded in exactly the same way as cellulose once it's hardened; so even if you do put the odd sag or orange peel area in the paint job, it's not difficult to correct it afterwards. The so-called fast hardener is the one to use outside a spray booth; it delivers air drying in any reasonable ambient temperature. Using either a fast or slow acting 2K thinner is the best way to ensure the paint finish settles out in a reasonable time according to the ambient temperature on the day.
But...Using 2K paint means that you do need to wear the proper protection while you're using it. I have an air fed mask, and I use a separate oil-free compressor to feed it -the oil free compressor is kept well away from where I'm working so it's not sucking in contaminated air. Neither of these items is particularly expensive, and properly used will ensure that you don't suffer the hideous effects of breathing in the Isocyanates that are present in the air while you're spraying with this paint. There's some more information on safety here.
https://www.hse.gov.uk/mvr/bodyshop/isocyanates.htm
But...Using 2K paint means that you do need to wear the proper protection while you're using it. I have an air fed mask, and I use a separate oil-free compressor to feed it -the oil free compressor is kept well away from where I'm working so it's not sucking in contaminated air. Neither of these items is particularly expensive, and properly used will ensure that you don't suffer the hideous effects of breathing in the Isocyanates that are present in the air while you're spraying with this paint. There's some more information on safety here.
https://www.hse.gov.uk/mvr/bodyshop/isocyanates.htm