Thread: Newbie question

Could be a gluing problem
Have you roughed up the tube with some sandpaper?
Have you cleaned the tube with acetone?
Have you applied the glue in such a way that there is an even amount to create a good bond between the timber and the tube for the whole joint?

Or you could be turning a particularly cantankerous piece of wood

I've had problems when I've tried too hard, ie too aggressive with the cuts, bluntish chisel, not being careful with cross cut timbe, etc


PS I've found the swearing doesn't contribute much to the issue on hand ... but I do feel better for having done it

Are you using old or well used bushes. With constant sanding which touches the bushes.....the bushes can become smaller diameter and therefore the walls of the pen are turned thinner to match the smaller bushes and blow out.

If so, buy some new bushes....if not, sorry don't have anything else to offer

sanding a couple of mill with a lot of revs on could be overheating the timber more than it likes to be heated

Hey Chris,

What type of glue are you using?? are you getting a good coating of glue inside the blank and on the tube?, If the Blank is splitting on the mandrel, you could be getting it too hot when you are sanding?? I usually just double up the sand paper and when it's too hot to hold I back off,
Hope that you get it sorted soon,

And yeah, Swearing wont fix the problem but will ease the frustration a little.

HazzaB

Without knowing what type of glue your using, but it sounds a it like the glue might not be sticking.

As the other guys have said roughen up the brass with a little sandpaper.

If your in a hurry use THICK CA to glue the tube in. Don't use the thin stuff, I had a few blanks break when i used it.

If you've got plenty of time I use a Polyurethane glue called "Vise" it swells up a little and gives a nice snug glue up, I havn't had an blanks break off the tube when using this stuff.

Gluing problem, of course why didn't I think of that?
Never thought of that one,
I've been slap dash with it, just doing a quick squirt of green (can't remember the exact name) superglue.
So lulled into a false sense of security by the blank sticking that I have even stopped roughing the blanks up as it seemed to stick fine.

It is so obvious but never dawned on me that it would have to be evenly spread.


Thanks guys

Chris

Don't worry too much we have all probably been a bit slack at times with the glue ups and paid the price , Because of the clearance needed to get the tubes in some times there can be air gaps or voids ,this allows the wood to flex under pressure of turning and sanding ,we largely depend on the tube to support the wood or acrylic so good adhesion all along the tube is essential ,especially things like slimlines as there is very little wood veneer when finished .,5 minute epoxy is good ,but so is polyurethane as it swells and fills any gaps ,ca can let go under heat and pressure ,all have there uses but some are better than others , cheers John