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What's wrong with my touch ups?

22K views 59 replies 29 participants last post by  boco  
#1 ·
Hey guys! Got a problem here

For some reason I've been having lots of trouble with my touch ups after my final sanding. I mix my mud with professional tint from the supplier. The problem is that when I sand the touch ups, my sponge doesn't sand the tinted mud but it sands the skim coat around it... leaving a bigger touch up...

I was working with another taper who was using the same tint and he had no problem. So it's not the tint. I've tried using thin and thick mub but it makes no difference. I've also tried using less tint but I still got this problem :S

Anybody knows what I could be doing wrong?

Thanks!
 
#30 ·
What does joe from trim tex use? I noticed he uses some type of yellow tint in the order book. I have some Mod homes where the ceiling joints are humped out and are showing after its primed. I was thinking of adding a tint so the HO would be able to see how much crap i have fixed. I usually use chalk or food coloring, but i was just wondering what else there is. I used to hate mods but i found a new company thats been paying me $42 an hour cash. I even bought a 20" advanced knife for the marriage butt seams. Some take 5 or 6 coats to level them but at that price its not such a pain in the ass.
 
#36 ·
I have found that touch up after prime is the only way to let your sins hide. Touch ups before final sand is okay to do now and then. But I found any touch up done after you finish sand is the worst thing one can do, doesn't seem to matter what mud is used by my experience. It layers and blows through, and you have to coat your joint all over to hide it. Nah-uh. Time is money.
 
#37 ·
The simplest ifx might be to use a softer mud to do the touch ups with and tint that.

That way a light sand won't affect the original coat.

I just use the same mud myself untinted and use a little piece of blue masking tape and stick that next to it, I've never see tinted mud, I'm colour blind and forgetful as hell so its masking tape for me, can't help but not see it.
 
#38 ·
The simplest ifx might be to use a softer mud to do the touch ups with and tint that.

That way a light sand won't affect the original coat.

I just use the same mud myself untinted and use a little piece of blue masking tape and stick that next to it, I've never see tinted mud, I'm colour blind and forgetful as hell so its masking tape for me, can't help but not see it.

????double post... apologies....
 
#40 ·
Everyone has a good point, But ive found its just the mud, All purpose has glue, Its the glue level in the mud thats doing it, One nz made mud we have is a reall shocker for it, Dare touch that up bare and you have a problem, Other muds dont do it, The USG midweight being one. A lite mud thats topcoat only might work but i havent tryed it.

And go get one of those small plastic bottles 100ml or so with a cap and a drip hole, Take it to the paint shop and ask them to fill it with paint tinter of whatever colour you want, I use a deep yellow colour, Then you can tint your mud, It dosnt seem to affect sanding but i usually try and light check after priming and touch up then, If that cant be done then light check before sanding early in the morn on daylight when its darker, you see everything then.
 
#41 ·
One nz made mud we have is a reall shocker for it, Dare touch that

Promix all purpose was a buggar for doing that, it didn't always behave like that though, I've stopped using it.


The problem with some muds is that when you apply a very thin touch up coat they tend to POLISH on, this polished coat is harder than the unpolished mud around it and under it. Villaboard finishing compound is the worst for it.
 
#56 ·
I never said anything about chalk coming through,but I've seen it happen myself, maybe the guilty party used an excessive amount, but it has null advantages when adding it to drywall mud besides leaving something behind for different materials NOT to bond well with. How much testing have you done with chalkline and the different aspects of mud, primer, paints, lacquers, acrylics, latex's oil bases?
 
#58 ·
I used to have this same problem. Touch ups not sanding out no matter how tight I feathered them. Then I realized it was actually worse the tighter I put it on. Thats when it dawned on me to try leaving the edges a little heavier.. and voila my touch ups sand out perfectly now. It seems contrary to logic but it works