JB Weld set up

[Newboater]

Probably should have asked before I started but anyway. I am using the standard 4-6 hour set-up time JB Weld epoxy to set my motor mounts and was wondering how long you leave the tape in place to keep a neat line, but still have enough time for it to be removed and the JB weld not run.
Thanks

[oscarel]

Won't that depend on the ambient temp?

[Newboater]

Yes to a degree but it is inside on my dining room. I figure 4-6hrs is set up time so I will start checking it in about 3 1/2 hours I guess

[martin]

Speak with Travis (kfxguy) on this forum, I believe he uses JB Weld & the tape method your using.

[oscarel]

Speak with Travis (kfxguy) on this forum, I believe he uses JB Weld & the tape method your using.

You beat me to that one, I've seen posts before where he gave some advice. He has some of the best lines using JB.

[Newboater]

Okay I will give him a shout. I will post pics tomorrow of how it turns out in the boat building thread under "My First Build"

[ray schrauwen]

I do a test piece first to learn the best time to remove tape.

Once it is pretty much set sometimes I use a wetted finger to smooth the edges before and or after the tape comes off.

[Newboater]

Thanks I think it came out pretty good. A wet finger trick is very good, I actually wet a popsicle stick for edge realignment.

[kfxguy]

I answered him via ok but because someone else may need this info I'll post it here too. First off it was 68f in my shop. I use the regular cure time jb weld. Use a heat gun once you apply it on low setting. That will soften the jb up. Use a 1/2" wide brush and brush the jb out to make it even paying special attention at the tape line. Make it taper to the tape line and make it thin as possible. I waited one hour last night and pulled my tape. You can wait up to 4 hours but beware if you have the jb thick over the tape line, when you pull it, it will be stringy and you'll have to do like new boater said and smooth it back down. Any questions I'll be glad to answer.

[boredom.is.me]

And if anyone is curious, you pretty much do the same thing with epoxy and silicone.

[Newboater]

Okay tape removed and motor mount done, smoothed over with a popsicle stick and water.

[ray schrauwen]

Great job! Better than me!

[Tamelesstgr]

What are you using to dye the epoxy?

[Newboater]

What are you using to dye the epoxy?

That is the standard color of the regular JB weld. I was thinking I could always paint it black if I decide I don't want to leave it grey.

[Newboater]

Great job! Better than me!

Thank you I was happy being it was my first time.