Is molto wood filler by AkzoNobel any good?

[Daniel M]

I got this normal filler a while ago and never used it but I recently found out that they have a fine filler as well. I guess that the fine one would be better suited for modelling but in any case I'll paint over it with water based acrylics. 

 

I once used a wood filler from Clou on a model and had an awful time painting it. The filler swelled up from the water inside the paint and that left behind significant creases. It also formed very fine cracks witch I was never able to fill. Both molto variants are for in- and outdoors so I guess water should not be a problem.

 

I'll buy a tube of the fine one this weekend to try it out on a smaller model I have but I wanted to hear your experiences with it.

Thanks in advance

 

[tmj]

What type of gaps are you looking to fill, and just how big are those gaps?  

[Daniel M]

On 12/18/2025 at 11:50 PM, tmj said:

What type of gaps are you looking to fill, and just how big are those gaps? 

It will mostly be just filling the 2nd planking so just little gaps.

[wefalck]

I had a quick look at the technical note on their Web-site and according to this it is basically PVA filled with ground-up calcite and talcum (the latter presumably improves the 'flow' when working it). So there shouldn't be a problem when painting over it with acrylics unless you really soak it in paint - one should apply in thin layers anyway.

 

I am surprised to hear about problems with Clou wood putty. I have used their products for decades and for me they are among the best on the market. A glitch could be that under pressure from the ecologists, they gradually move away from organic solvent-base formulations to acrylics-based formulations. In the case of putties this should not really be a problem - another case are the sanding fillers, that do not penetrate as well as the original ones. I would suspect that the putty was applied in a too thick layer and had not fully cured before being painted over.

 

[DGraley]

I use Goodfilla with excellent results.

[wefalck]

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