WELD-ON #4 or 16? Which do I use for Acrylic?

SPSFiend

New member
I bought some #16 and realized that there is a #4? Which do I use for acrylic? Do they both work or is one better than the other?
 
#4 is good for making the initial joints. #16 if you need something for a "filler" effect in case you think there are weak spots. HTH.
 

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