[deputydog]

When applying a skim coat of filler to an entire door and the filler starts to tack over BEFORE the entire door is covered is it ok to mix a new batch and continue were it started to set up or must I sand and feather the edge before covering the rest of the door?

 

[Painter_Dave]

IMO if you can not spread one panel back off the hardener a little bit,

i have remixed and went into semi dry filler as you ask before. not sure id recommend doing so though

 

[jpatt87]

I never do. When I'm spreading entire panels like a door then I do half of it at a time. Before I spread the other half I hit the old with 36 grit before I apply the new over it.

 

[litshoot]

Hope its not i did about 10 sepearte patches to cover a foxbody hatch. 85 degrees at night doesnt help

 

[GTOJesse]

Different batches of the same filler sand at different rates so as mentioned, back off on the hardener.

 

[7817]

When applying a skim coat of filler to an entire door and the filler starts to tack over BEFORE the entire door is covered is it ok to mix a new batch and continue were it started to set up or must I sand and feather the edge before covering the rest of the door?

Try to avoid it. The styrene in the filler rises to the top and can cause the next layer to not bond as well as it should, and you lose the mechanical body unless its scuffed.