Thread: advice on gluing requested

Originally Posted by jow104

Did I ought to scratch the joint surface a little for glue to have something to anchor too?

No ruffing things up for a better glue joint is a myth and has no validity the smoother the surface the better.

I agree, just glue the untouched cut surface.

Robert

G'day John,
Because it usually is end grain, Saint Doug Stowe says, let the first application of glue gel a little as it absorbs into the end grain, then apply extra glue.
He then usually keys the joint.
Just passing on his info.

Thanks for your confidence boosting replies, however I think the glue will drip off the cuts as they are very smooth

Since it is just a practice mitre cut, why not do a practice glue up and see what happens? Either that or get some good Aussie ironbark and take that fine edge off your blade

John,

stop pulling our legs


enjoy the new blade

ian

Originally Posted by ian

John,

stop pulling our legs


enjoy the new blade

ian

Knocking up a blade box to store my tablesaw blades and cut ply timber with new blade and then glued has butt joints as per picture below.



Removed weights and clamps 3 hours later and every joint has failed. Never happened before

Might be the cold weather only just over 50Far. here today, or is it the blade?.

Woody,
I have a feeling you did not give the glue time to set and the temprature being so low did not help. I give any glued joint at least an overnight rest. What glue was it and did you follow the instructions. I think that a good clean cut from a new blade would be ok to glue. I always give my joint surfaces a wipe with spirit to remove dust and oils from the timber itself or from you'r fingers.

Regards
John

Glues do not "key-in" like paint coats do, glue absorbs amalgamtates and (cross)links.

Two possible faults could be clamping, not enough time or pressure, and temperature;few glues set below 10 degrees C much longer setting/clamping time required.
Most glues use around 20-22 Degrees C as standard temp for time recommenations.

Yes I expect its down to temperatures, the first failure of our winter, so its back to the kitchen for the next six months.
I think I shall also have to batten corner joints because the ply I was using was that packing ply that was used on delivery of the new tablesaw, cheap and nasty.

HI John.

Reglue the thing and put veneer 'feathers' across the joints to get the things to stick.

Gluing end grain to face grain rarely works.

CHeers,

eddie

Thanks for the advice.