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Post by Deleted on Mar 10, 2011 13:37:03 GMT
Hey guys here is a easy way to sort out cracked tsuka. If this is in the forum allready please dont flame me 1) Pop your tsuka off 2) Find the reason behind your new rattle 3)Use some PVA glue and sparringly apply to the area, use a little and let gravity carry it down the crack. YOU DONT WANT to fill your tsuka up with PVA, so remember a little goes a long way. 4) As quick as you can bind the top off the tsuka tight, i hold the start of the cord with my teeth. Then tightly wrapp the cord around the area, a simple tie will hold it in place. 5) Being prompt again turn the tsuka upside down and wipe out any excess PVA glue that will have been pushed out of the crack after step 4. I use a wire with baby wipes at the end, when your happy leave it upside down for the night. 6) After the glue has dried, inpsect the cavity for any bumps of glue, sand them off, or cut them off using the tip of a screwdriver. 7) Now enjoy the new lease of life your tsuka has. I have used it on my swords for some time, saves buying or carving a new tsuka. And yes its strong, i doubt you would need to replace a tsuka repaired this way
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Post by Elheru Aran on Mar 10, 2011 14:01:07 GMT
That is one way to do it. The only thing I would be concerned with is how deep the crack is. Would you suggest thinning down the glue with a little water to make sure it penetrates, if you can see the crack goes farther down the tsuka core than an inch or so? Though if the crack is that bad...
But anyway, nice tutorial and I do appreciate the pictures, they're always good to have! Thanks...
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Post by Deleted on Mar 10, 2011 14:11:22 GMT
No good sir just let gravity do its work, as long as the PVA is not cold it will run free enough to get down deep. its summer Here in Australia, and PVA flows like white tsuka fixing wine. Oh and of course you would need to bind the full length of the crack
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Post by frankthebunny on Mar 10, 2011 16:28:58 GMT
cool demo. I'm curious though to why you chose to use pva glue instead of wood glue? on a clean join/break wood glue is able to create a bond that is often stronger than the wood itself. unless the break or crack is rotted out or has deteriorated badly, the join should be a clean one and should pose no problem for a tight bond.
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Post by Elheru Aran on Mar 10, 2011 17:05:03 GMT
Ahhhhh! Yet another Ozzie! You lot are everywhere! Well, beat my brogues and a g'day to you, mate! Frank: I'm guessing he uses PVA because it's what he has? It works, wood glue might work *better* but PVA falls in the 'good enough' category. And considering the Australian summer, I'm not surprised at all it flows like wine, here in the States it flows like, well, glue
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George
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Post by George on Mar 10, 2011 23:11:29 GMT
Here in Aus PVA 'IS' wood glue?? Or do you mean liquid nails, the cream colored stuff?
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Post by frankthebunny on Mar 10, 2011 23:20:03 GMT
I thought it was for book binding and paper crafts.
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Post by Ichiban on Mar 11, 2011 1:45:54 GMT
Here it's called outdoor wood glue, and will be more resistant to temperature changes and moisture than regular wood glue. I used it on my naginata, and it's stronger than oak. I did a stress test on some pieces and it didnt break at the seam. I have no second thoughts about glueing a cracked tsuka as long as the cracks are caused by mechanical stress ( forced on tsuka and cutting) and not wood cracking from the wood drying. Some material will need to be removed though to relieve the stress.
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Post by Deleted on Mar 11, 2011 2:29:32 GMT
Yeah guys down here I use 'selly's PVA wood glue' sorry about the confusion, and by the goods yes the bond IS stronger then the wood itself. It works really well, my tsuka repairs are all from normal wear & tear.
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Post by frankthebunny on Mar 11, 2011 3:32:39 GMT
ahhhhhhh ok, sorry about that. sounds like good stuff. Ichiban's comment made me remember that it should be pointed out that if the crack was caused by the tsuka being too tight in the first place some material should be removed from inside to reduce the stress that caused it before gluing it back together. unless that's what you meant Ichiban, lol in which case..... what he said
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