MDF: What saw blade and screws to use?

[Per]

Hi.

I always use polyerethane glue. It foams up, when the parts are moisted with a waterspray before gluing. (actually the moist in the air will do it too).
That approach makes all joints perfectly airtight.
Dont get the stuff on your fingers, (can be removed with paintthinner when wet) or you have to wear it of :=(

Kind regards Per

[Jeff R]

Originally posted by Per
Hi.

I always use polyerethane glue.

This is good glue, but it doesn't keep worth a dang. Once you open the bottle, it will harden in a week or so. This is the kind of glue that you don't buy that bigger bottle as it is only a little bit more and you think "I can always use that glue on my next project"! Nope. Plan on throwing what you don't promptly use away.

Unless someone has some tips on how to make it last longer... I have stored the bottle upside down, even, and it still hardened after a few days. Maybe humid Florida weather has something to do with it, I don't know.

[Philo]

Jeff R,
I had the same problem when I was in FL. Try squeezing the bottle until the air is out and the glue is right up at the top then cap it and store the bottle on its side. This will prolong the glue. Poly glue is good stuff but I switched to construction adhesive (HD Liquid Nails). It can be even messier to use but is very strong and is more reliable the poly glue to me. I have been able to pull apart some joints days later that had foamed to much and undermined the integrity of the glue.