Sawdust & PVA Glue consistency?

[vossy]

Hi all, does anybody use the sawdust from left over planks mixed with PVA Glue and water to create a very fine filler for very small gaps in hull planking?

 

If so, what mix ratio/consistency do you make your paste? 

 

Thanks

 

Chris.

 

[Bob Cleek]

I sure don't. Cured PVA doesn't sand well and I doubt adding sawdust to the matrix would make it all that much easier to sand. 

[Mike Dowling]

What I have done before is to sand the hull leaving the dust on it and then paint it with sanding sealer across, not along the planks which brushes the sawdust into any small gaps. It is the easy enough to gently sand the whole hull again with fine sandpaper. Works well for me.

 

[allanyed]

1 hour ago, SpyGlass said:

I keep a small jar of sawdust as it is created when planking specifically for filling  IF REQUIRED.

I do the same thing, collecting saw dust from my thickness sander.  I turn off the vacuum that collects the dust for a few passes then collect the dust in small jars for each species.

I dab a little white PVA glue in the tiny gaps and push in some of the sawdust with a finger, let it dry, then sand.   Is it perfect?  Nah, but it does look MUCH better than those tiny slits.  Is it easy to sand, yes, very easy, in my experience.   Obviously, tight fights without those little gaps is best, but.........stuff happens.

Allan

Edited December 24, 2022 by allanyed

[davyboy]

I mix the wood dust with sanding sealer to make a paste and fill any small gaps with that. I prefer that to

using PVA glue.as I think it gives a better result.

 

Dave 

[No Idea]

Yea I do - Its a great way of filing gaps as I cannot make all of my joints perfect despite trying.  

 

I have found though that it's best to use the finest saw dust that can be made to make it seem a part of the build. 

 

So I actually make a deliberate stash of saw dust and then make it into a nice thick paste with PVA.  It is however difficult to sand down as has been said before . So I apply it before the first sanding.