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is this safe

1K views 14 replies 8 participants last post by  Karda 
#1 · (Edited by Moderator)
I am turning a bowl but it has a major right through the center will a tenon or recess hold or is it fire wood
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#5 ·
If it were mine - looks like the pith may be in the top of the blank - I would inspect for other cracks, it is walnut which loves to crack. If I went on, I'd probably go with a tenon since the crack is deep, so I could take more crack out. Now start filling the crack with ca - leave some trim space on the tenon to cut the glue off. I'd put some thin ca into the crack let it soak in well, put more thin ca followed by medium ca, using accelerator, more medium and accelerator till I fairly well filled the crack, knowing some is coming off when finishing the shape.

JMO put more curve into the side of the bowl.
 
#6 ·
I suggest you pull a Howarth (after YouTuber Frank Howarth) by measuring diameter, then cutting an inch or so wide strip out containing the crack leaving you with two halves. Create a replacement for cracked piece from a contrasting wood. glue the 3 pieces together with a glue block, mount and finish turning as you desire.
 
#8 ·
how about epoxy, the crack is deep in some places. It is slant sided now, I was thinking a deep cove, how deep depends on the width of the foot. I want an ogee but I just can't do them. I always end up with a straight where its supposed to cove or a witches cauldron shape. Nobody has ever accused me of being creative.
 
#9 ·
depends on the viscosity of the epoxy. If you have low viscosity, so it fully fills to the bottom of the crack, ok. I only have the hi viscosity type that wont, and use ca instead. As for shape, just keep working at it. You dont have to create the shape completely by cutting with the tip of a gouge. The shape can be finished or completely formed with scraping, either with gouge wings or a scraper tool - might help you create the shape you want by slowly removing material.
 
#11 · (Edited by Moderator)
Mike, here is a picture of a piece I just finished yesterday. I fully expected it to come apart, especially when I only had a small nub with my live center point dead center of the crack. Mesquite burl dead at least since the very late '60's.
The crack appeared when I first roughed it. I used a little thin CA along the entire crack. It held up real well until I started getting nervous, and doused it with more CA.
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The piece you are showing looks like you could rough it to the shape you want, and then apply whatever material you wish to use.

I personally am having doubts of using epoxy along a wet crack. The wood is still wet and moving. Applying epoxy along that crack will in my opinion only, more than likely stick to the wood. But if the wood is still cracking, it could be a wasted batch of epoxy.

It looks like the cracks don't go too far up into the blank. get whatever tool you are comfy with, and start working on an outside shape, then turn it around and hog out to the 10% thickness. Set it aside and wait for it to dry more before you try to save it. You could do the same to the other one you're working. If you have more wood stashed, do what you can for roughing them, and let them sit for at least 3-4 months.

If the cracks do reach the rim, toss it or them and start more if your health allows…... .Jerry (in Tucson)
 

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#14 ·
I wasn't thinking wet wood earlier, and I should heve been since it is in the rough turning stage. I agree with Jerry, if the wood is wet ca is a better choice. They way thin ca wicks into the wood fibers adds a lot of strength to the whole area of the crack which is why I prefer it to epoxy in a situation like this.
 
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