Sandable filler is probably 5 to 8 times the density of foam... I'm speaking of the Elmer's or other sandable wood filler. I'm really having a hard time visualizing what the application is. You can send me a Rocksim file at wbmussel@indra.com or post a picture in here if you're savvy enough with forums and how that works.

Warren

What is the density of the foam, or through your before and after measurements, how much weight did it add tothe rocket?

hard to predict and depends on the foam, how carefully mixed, how much space to expand. Weigh the liquid before you mix it, mix and pour. You can figure the density by figuring the total weight divided by the volume.

Warren

What is the density of the foam

Expanding foam usually comes in 2 lbs/cubic ft to 16 lbs/cubic ft depending on what you buy.

Doug

Well, I had always used a little bit of the GLR expanding Mega-Foam at a time, but not today... was doing two things at once... looked up from working on my av-bay only to see foam foaming out of my nose cone... the panic hits, and a realization that I never read what counteracts it in the instructions and probably never will. Paper towels and rubbing alcohol and a putty knife are grabbed while cursing under my breath... first clean it off the deck and a quick rationalization that I'd have to paint it this spring anyway... hands full of foam into the trashcan on the porch... on and on it goes... getting it up and off everything as best I can, realizing that I haven't grown up at all from the time I tried to clean my messes before my parents got home, now it's before my wife gets home... more cursing and cleaning up... I'll never do things like this too quickly again, yeah right... I cleaned it up as best I could and set it in the garage. Tomorrow I will praise whoever invented sandpaper... what a mess!

Thanks, Bruce. Made me smile as I related to the story.

Glad you could relate! Still peeling it off my hands... 🙄

Hey at least it was a warm day to be working outside. 😀

That's why I was doing two things at once, couldn't waste the day. 😉

Well, I had always used a little bit of the GLR expanding Mega-Foam at a time, but not today... was doing two things at once... looked up from working on my av-bay only to see foam foaming out of my nose cone... the panic hits, and a realization that I never read what counteracts it in the instructions and probably never will. Paper towels and rubbing alcohol and a putty knife are grabbed while cursing under my breath... first clean it off the deck and a quick rationalization that I'd have to paint it this spring anyway... hands full of foam into the trashcan on the porch... on and on it goes... getting it up and off everything as best I can, realizing that I haven't grown up at all from the time I tried to clean my messes before my parents got home, now it's before my wife gets home... more cursing and cleaning up... I'll never do things like this too quickly again, yeah right... I cleaned it up as best I could and set it in the garage. Tomorrow I will praise whoever invented sandpaper... what a mess!

ya be on your hands for 3 days!

Glad you could relate! Still peeling it off my hands... 🙄

3 DAYS!

If you look at my work Jacket I still have it on that.

Not sure if anyone has ever tried this but I have found that if you are looking like you are going to over flow you can start tapping on the foam with your fingers and it slows it down and will help you control it or you can be like Chuck L and calculate the volume and only mix the exact amount to only fill what you want. I still tap on it as it gets close.

Mike K, I sent you a PM. Sorry to blast the notification here, but my PM seems to be acting really weird and I wanted to make sure you got it.

Warren, I got a PM this morning that was relatively ancient... strange thing is that I have rec'd others lately, but a very old one showed up. FYI.

JW

Thanks John. I'll look into it. It has happened to me before too. phpBB, the forums package we use, also handles the PM's. We may replace it soon with something else. In the meantime, I'll see if I can fix it. Also, to everyone, if you're in a thread and it starts running 4 pages or more, be aware that is when this forums problem crops up. Try to keep threads 4 pages or less - <60 posts. You can always start a new thread to continue the meme.

Warren