07-10-2023, 10:54 PM
PeterB wrote:
What is the difference between the different types of Weld-On ? ...
Read the label. Each has different properties.
#3 and #4 are nearly identical, but #3 sets so quickly that you probably won't be able to make the join properly and will end up either mis-aligning it or jiggling it while it sets so will leave a scar where the pieces drag against each other.
#16 in a tube is very thick. I use it to to seal seams and fill gaps. It can substitute for epoxy in some situations, for example, when I cement neodymium magnets in plastic.