11 replies to this topic

[hustybusty]

I think I've made a boo boo. Ages ago I ordered some paint. The colour -tins marked up as 2k acrylic. Ive sprayed the entire front end with it, let it flash off and 2k cleared over the top. I had a couple of blisters on the skuttle so i sanded back, redid, and cured with ir shortwave lamps.

I ran out of colour and When I've gone on Jawels website to reorder the product I seemed to have brought is described as "high gloss" and "no need to apply a topcoat". All this time I had it in my head I was just using a 2k basecoat.

So front end is looking fantastic, very pleased with the finish but now I'm unsure whether it's going to cause me problems further down the road once it comes out the garage and into the elements - if I do the rest of the car as I did the front.

I've googled it to death but people are referring to either acrylic colour,or solvent basecoats.

Any advise whether to push forward with 2k over 2k acrylic, or redo the entire car with 2k of solvent basecoat and lose the front end hours of work and good paintwork.

The base/colour Ive used is octoral octocryl it appears from cross checking the reference numbers.

[hustybusty]

 2k over 2k-1.jpg   77.77K   2 downloads  2k over 2k-2.jpg   32.22K   2 downloads  2k over 2k-3.jpg   69.04K   2 downloads

[Homersimpson]

If the paint you have used is standard 2K direct gloss and you have lacquered this then you should be fine although its not strictly necessary.  I have done this many times previously and have found that on red colours it works really well and gives a brilliant shine but on other colours (especially dark colours) it can act a bit like a magnifying glass and highlight any imperfections under the paint (sanding marks etc.).

[hustybusty]

That's what I was hoping to hear thanks homer.

[bluedragon]

Assuming I understand the scenario correctly - check the application instructions for your new single-stage paint (i.e. color coat that doesn't require a clear coat over it.)

 

The product will have a maximum time to apply a clear coat over it. Once this time period is exceeded, you will have to flat the color coat with an appropriate grade of abrasive paper to give the clear coat something to adhere to.

 

If you don't flat it, and you exceed the time window, the new clear coat will just peel off in time. The reason for this is that within the time window, the color coat is still chemically linking its molecules for maximum hardness. If you clear coat within the time window, the clear coats' molecules will link to those of the still-hardening color coat, creating a inseparable bond. Once the color coat's chemical hardening process is complete, the clear will have to rely solely on mechanical adhesion, and a slick, smooth surface offers very little for the clear to stick to.

 

 

Dave

[hustybusty]

Thanks dave for reply. Tds says nothing about clearing it and in product description says no need too. As I had it in my head that it was a regular solvent basecoat (you would think I would have twigged when I was having to apply hardner but hay) I applyed the clear within 20 minutes,probably less,Definitly left it long enough to flash.

[bluedragon]

I'm sure it will be fine. If nothing adverse has happened by now, nothing will (i.e. bubbles underneath.) And it sounds like you were supplied with a matching product system, so the clear will only enhance the durability and potential shine of the paintwork (especially for a lighter color.)  In a matched system, the two items will of course work together if properly applied.

 

After flash time is usually sufficient, though ~20 min. is a bit on the short side for most products. But different systems vary, and if it flashed off properly then that's the primary issue. Looking good!

 

 

Dave

[hustybusty]

Thanks dave. Photos always look better but it's still the best finish Ive had, pleased as punch with it and I was on the edge of my seat thinking I'd have to ditch it.

[cradley-heathen]

im a little confused by whats going on here, you say the basecoat is 2k, did it have hardender in it?

[hustybusty]

Ive refered to it as basecoat but really it's 2k acrylic mixed colour which needs a hardner at 2:1.

[ashparry_]

Sounds like you've used a 2K Direct Gloss. Designed to be used on its own. You can 2K clear over this perfectly fine too.

[hustybusty]

Looks that way, thanks for the replys, and for them being the anwser I was hoping for ;)