How would you clamp this glue joint?

[Tetsuaiga]

I need to glue two strips either side of a block, the block has an angle of 86.2 degree on either side, so looks like this but much less of an angle \_/.

I found I can clamp it up without glue okay, but once glue adds it lubricated and the two strips on either side slide down.


One idea I had is to use very small dowels just to prevent sliding. Or fixing the shortest side of the block against a fence so nothing moves down.


Any have suggestion for the easiest way to do it?

 

[MARK.B.]

Maybe some sort of contact adhesive / fast tack would do the trick ?

 

[Tetsuaiga]

I've been thinking about doing hide glue rub joint. It's a joint that will be under strain though so i'm unsure if its suitable as I seem to remember reading rub joints are weaker than clamp.

 

[rdesign]

if you have a biscuit jointer try that. I had a similar problem with dinning room table legs and used mitre bond on the faces regular wood glue on the dominos borrowed one for this task. the dominos gave strength the mitre bond held it till the yellow glue dried.

mitre bond is great stuff. if its not that visible a piece glue acre and plug always works.

 

[dunbarhamlin]

use hot hide to add wedge shaped clamping tabs to turn it into a straight through clamp up (plane or pop off afterwards) and perhaps use a few snipped off staples or panel pins in the glue surfaces to provide some slip resistance during clamping

 

[dzj]

A bit of sand in the glue can prevent slipping.

 

[Jacob]

Nails or pins? Pre drill and get the points engaged, separate, apply glue and re-engage the points etc.

 

[swb58]

Don't know what size your block is but if it's not too long and awkward to set up, how about fixing two blocks with the same \_/ angle, lay your work between and clamp down into the V.

 

[Sawyer]

Depends how much strain the joint will be under and in what conditions. Hide glue, as suggested, would work well and will 'grab' after a few seconds, but wants 24+ hours to set fully. The joint will be strong although of course, useless in the presence of moisture.

For anybody lucky enough to have one, a vacuum bag press would be good, though you'd need to pin the strips to prevent 'creep' under pressure. Veneer pins, if punched & filled afterwards would be practically invisible.

If the joint will be under more strain, I'd reinforce with pins or screws as Jacob suggests.

 

[Mr T]

You could try driving panel pins into the block edge then snipping them off just above the surface, less than a mm. They will be driven into the edging piece on glue up and stop the slipping.

Chris

 

[Graham Orm]

Clamp a straight edge along the bottom of the vee so they can't slide.

 

[Phil Pascoe]

Attach some blocks with hot melt that will give you parallel faces to clamp across - they won't slip anywhere. You won't need much of it.

 

[Kalimna]

+1 for using snipped off panel pins. Allows you to easily locate/register the two surfaces prior to clamping. Worked nicely on the butt join for my ukulele neck.

Adam

 

[Green]

Lay them down points together then tape across the joint with strong adhesive tape. Turn over, apply glue and fold the joint closed. A couple of panel pins on the angled faces (nipped off slightly proud) will help.

 

[Tetsuaiga]

Thanks for all the suggestions.

I think I might go see how I can do with just hide glue, if it's not okay i'll try the pin idea.

Another idea I have would be to make the centre block over size, screw in strips vertically at the very end of the block to prevent slipping. Once finished I could cut off the area where screws were as I don't want the screw damage showing.

The pin idea might be easier and faster though. Is the idea that when clamped they will be pushed into the centre block so they don't make an uneven surface? Or maybe also compress into the applied clamping piece.

I don't have panel pins, but do have some veneer ones. I presume they'd work too? I the they are just a little smaller.

 

[Green]

Any little pins/nails will do. I nip them off then give them a little sharpen with a file.

 

[Eric The Viking]

A bit of sand in the glue can prevent slipping.

That's one of those neat, elegant, why-didn't-I-think-of-that ideas!

Brilliant.

E.

PS: We used to do it with varnish for non-slip surfaces in dinghys, but mixing sand into glue never occurred to me.

 

[Phil Pascoe]

We used to put it in varnish on toilet doors in bars. You could tell who'd punched the holes in them by the grazed knuckles.

 

[Giff]

A headless pinner ? http://www.axminster.co.uk/axminster-aw ... ess-pinner depending on the thickness of the pieces.They only leave a very small pin hole sections can bet held in place and the pin inserted vibration free i.e. no hammering.

 

[Tetsuaiga]

If you use one of those air powered pinners, is the pin hole very visible?

The sand idea sounds interesting, the only thing i'd worry about if how much if effects the strength and life.