How To Wet Sand Base Coat Paint

I shot some base coat this morn and I have a couple areas that demand attention. I know it has to be dry, but wondering if there is a time span that
the base needs to dry out before I can exercise some low-cal sanding and re-coat? I know that it needs to exist re-coated before 24 hours.

Cheers

Quote Originally Posted past kcode View Post

I shot some base of operations glaze this morning and I take a couple areas that need attending. I know information technology has to exist dry, merely wondering if at that place is a fourth dimension bridge that
the base of operations needs to dry out before I can practice some light sanding and re-coat? I know that information technology needs to exist re-coated before 24 hours.

Thanks

It depends on the type of base and the type of chemicals that were added to it AND the temperature during the dry/cure wheel.

If you're using a base that is simply base of operations and reducer and you lot used a "fast" reducer and the temperature is above 75 degrees yous should be able to sand it iv or 5 hours after it's sprayed. If you can rut the console with a lamp (or in the lord's day) you tin can probably cutting that time in half.

Base can take a tendency to exist gummy and clogs the paper quickly so sometimes moisture sanding is best. Sometimes information technology's best to sand information technology as early every bit possible considering some base of operations coat products will tend to wrinkle if they are re-sprayed after it dries too long.

Quote Originally Posted by kcode View Post

I shot some base of operations glaze this forenoon and I take a couple areas that need attending. I know information technology has to exist dry, but wondering if there is a time span that
the base needs to dry before I tin exercise some light sanding and re-coat? I know that information technology needs to be re-coated earlier 24 hours.

Thanks

You need to read the tech sheet, what paint are y'all using. there are a number of basecoats that have strict warnings Do Non SAND the base.

Oh boy did I start a firestorm on another site on this bailiwick! LOL A few years ago people were suggesting to sand the base of operations, I gave the aforementioned warning, they blew me off. I went out and did a picayune test and the base and or clear would come RIGHT OFF with tape after it was done! I mean EVERYWHERE the record was it pulled off EVERY foursquare MM of articulate or base off depending on when I sanded information technology. So you want to keep the sanding to a minimum "de-beak" is how it was referred, do NOT sand it apartment! Now, if you have to, you lot only go on this to the smallest possible area.

Brian

The problem I had was a niggling lifting. I let it dry out and then knocked information technology down past wetsanding it, and so shot a little sealer primer over it. I will wetsand with 400 again in those areas. My goal is to shot with base again and and then clear. My window is virtually 20 hours at present.

I read the data sheet already and it just says dry in 15 min and record complimentary in 60 min. It seemed to sand fine by wet sanding.

It'southward Deltron DBC

Quote Originally Posted past kcode View Post

The problem I had was a little lifting. I let it dry and so knocked it down by wetsanding it, and then shot a little sealer primer over it. I volition wetsand with 400 once again in those areas. My goal is to shot with base over again and and then clear. My window is about 20 hours at present.

I read the data sail already and information technology simply says dry in 15 min and record free in 60 min. It seemed to sand fine by wet sanding.

Information technology'south Deltron DBC

You should exist ok if y'all can apply new base without lifting only Brian is right, applying clear over sanded base of operations could cause problems if the base of operations is past its recoat window.

I think it should be ok. I will use new base of operations over the whole automobile, so I am besides thinking it should be fine............If I stop within the next xx hr. lol Thanks

Quote Originally Posted past Len View Post

You lot should be ok if you tin can utilise new base without lifting only Brian is right, applying clear over sanded base could cause problems if the base is past its recoat window.

Len, the test I did was with Dupont Chroma base and it FAILED no matter what I sanded and applied over it. If the base was sanded and more base applied so clear, the 2nd coat of base and clear peeled off that sanded first coat. If the base was sanded and cleared the clear peeled off. If I sanded it only not as much, it still peeled simply not as much, I am non kidding you it opened my eyes!

Y'all can skip from about the 5th page to about 3 from the stop every bit all that you volition detect there is bickering. But honestly, until one of the guys who disagreed with me at the beginning did the examination him self and was man plenty to post the findings did information technology come to a somewhat peaceful end. http://www.hotrodders.com/forum/inte...on-110339.html

Brian

Quote Originally Posted by MARTINSR View Post

Len, the exam I did was with Dupont Blush base and it FAILED no thing what I sanded and applied over information technology. If the base was sanded and more base practical then articulate, the second coat of base and clear peeled off that sanded commencement coat. If the base was sanded and cleared the articulate peeled off. If I sanded it but non as much, information technology all the same peeled just non as much, I am not kidding y'all it opened my eyes!

You can skip from about the fifth page to about three from the terminate as all that you will notice there is bickering. But honestly, until ane of the guys who disagreed with me at the outset did the examination him self and was man enough to postal service the findings did it come to a somewhat peaceful end. http://world wide web.hotrodders.com/forum/inte...on-110339.html

Brian

Ok, let me get this straight.... You lot sanded the base while it was still within the recoat window, applied more base then cleared it and allowed it to harden. Then you practical tape to the articulate and pulled it off and y'all also pulled off the clear and base with it. Is that correct?

Quote Originally Posted by kcode View Post

The problem I had was a picayune lifting. I let information technology dry and then knocked it downwards by wetsanding information technology, and so shot a lilliputian sealer primer over it. I will wetsand with 400 once more in those areas. My goal is to shot with base again and so clear. My window is about 20 hours now.

I read the data sheet already and it merely says dry in 15 min and record complimentary in 60 min. It seemed to sand fine past wet sanding.

It'southward Deltron DBC

I don't know Deltron so just follow the tech sail and you will be fine. If it says "low-cal sanding" or something like that take it seriously, do as they say. If it'southward a catalyzed base you can exercise almost annihilation to it.

Brian

Quote Originally Posted by Len View Post

Ok, let me get this straight.... You lot sanded the base while it was nonetheless within the recoat window, applied more base and so cleared information technology and immune it to harden. Then you practical tape to the clear and pulled information technology off and you also pulled off the clear and base with it. Is that correct?

Yes

Brian

Quote Originally Posted by MARTINSR View Post

Yep

Brian

I've got to try that with Glasurit to encounter what happens. I'thou not a fan of DuPont paint and then I don't use it if I have a selection and I don't think I've ever sanded Glasurit base merely now yous got me curious.

What do you do if you screw upward the base? Clear it, sand it and reshoot the base and clear?

Quote Originally Posted by Len View Post

I've got to try that with Glasurit to see what happens. I'm not a fan of DuPont paint then I don't use it if I have a choice and I don't think I've ever sanded Glasurit base but now y'all got me curious.

What do y'all do if you spiral up the base? Clear it, sand it and reshoot the base and clear?

You probably have nothing to think almost with the Glasurit because they don't tell you in the tech sheets in commodities print as it is hither DON'T SAND THE BASECOAT like it did in the Chromabase tech canvas.

With the ones that have the warning, if you had a run or something and but sanded that one expanse, you were taking a hazard. But if you were to do information technology you have to continue it to a as small-scale an area as you possibly can. Lamentable about that link, information technology was a serious battle over that subject, it looks like a word in the "fight lodge". LOL But like I said it sure was dainty that Bob who disagreed with me did the test and posted the results, he is a admirer.

Brian

I will try to do a little test myself and see what it does? If did not say "DON"T SAND" anywhere as far as I could tell?

What's your opinion on spraying at about 26 hours when it says to respray within 24?

Quote Originally Posted by kcode View Post

What's your opinion on spraying at almost 26 hours when information technology says to respray within 24?

You lot could accept adhesion issues. I normally try to spray a couple hours after the base is practical simply it all depends on your paint products.