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Has anyone else had a problem doing this? It seems that the Putty softens.
PPP is water soluble, so yes it will dissolve with water. I will let it dry then knock down some of the access with a damp q-tip, then finish sand with fine sanding tools.
Bruce
On the bench: 1/48 Eduard MiG-21MF
1/35 Takom Merkava Mk.I
Not being able to wet sand is my only complaint about PPP.
It's a kind of a big deal to me, I like to be able to wet sand, but I guess we can't have everything.
Apply PPP, let it set off, then smooth with damp Q-tip, finger, radius tool, etc..
Key advantage is that it can be smoothed while not set, doing most of the work in applicaton, so that you don't loose rivet details, etc.
Takes a little lateral rethink.
East Mids Model Club 32nd Annual Show 2nd April 2023
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Don't feed the CM!
Yeah ;
I just discovered that myself . I had some spots on My Noordyun Norseman and I wet sanded . It all disappeared ! had to do it over .Oh Well , Lesson learned !
Greg Not being able to wet sand is my only complaint about PPP. It's a kind of a big deal to me, I like to be able to wet sand, but I guess we can't have everything.
Greg, PPP sands smooth as silk. I remove as much as possible with a damp paper towel or Q Tip which reduces all or most of any sanding. Then shoot it with either Future or Aqua Gloss to get rid of any surface texture difference for a perfect paint surface.
Too many models to build, not enough time in a lifetime!!
Why wet sand?
plasticjunkieGreg, PPP sands smooth as silk. I remove as much as possible with a damp paper towel or Q Tip which reduces all or most of any sanding. Then shoot it with either Future or Aqua Gloss to get rid of any surface texture difference for a perfect paint surface.
Thanks for you input, Ernie. You know it is always appreciated.
modelmaker66 Why wet sand?
I think the idea is that the water carry away the sanding debris and loose abrasive material, sort of like cutting fluid in a grinding machine.
Somebody correct me if I'm wrong.
Greg modelmaker66 Why wet sand? I think the idea is that the water carry away the sanding debris and loose abrasive material, sort of like cutting fluid in a grinding machine. Somebody correct me if I'm wrong.
You are welcome. True that Greg on solvent type fillers but PPP is water based as previously mentioned.
plasticjunkieTrue that Greg on solvent type fillers but PPP is water based as previously mentioned.
Right. I just meant for putties and such that are wet-sandable, Ernie. As we know, PPP turns to mud. :)
Thanks for the reply. Just sounds like a mess to me. Wipe down the part with a cloth when done.
Hi;
As an owner and builder of cars in a Auto Body Shop that Repaired rather than replaced parts , Wet sanding was the Cats Meow .
In models it is too .When you wet sand , any large rough particles that would crust up in the grit are instead washed away . Leaving a truly smooth surface. On a real auto this gives a surface like fine satin to the touch , but a heck of a sticky surface for the coming layers of paint !
On a model now . Sanding wet , with 1800 grit or higher gives a silky surface and gives you that Winning surface finish !
Yep, that's why I like wet sanding too, TB.
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