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Thread: Help needed. Table top issues.
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18th November 2012, 08:18 PM #16GOLD MEMBER
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As said, your problem has been caused by shrinkage and the weakest board cops the split. Your S clips are to allow for shrinkage, but your glued breadboard ends prevent the necessary movement to stop cracking. To fix the problem, I would remove the top from the table, glue the split, clamp up as per the original top fabrication, when dry remove clamps and saw off the breadboard ends, run a groove along the inner face of the now cut off ends and route a matching tennon across the board ends of the table top. The new breadboard ends should be fixed only to the two outer boards with slotted hole screws and then timber plugged to conceal heads.
The man that never made a mistake never did anything.
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18th November 2012 08:18 PM # ADSGoogle Adsense Advertisement
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19th November 2012, 01:20 AM #17
Skew's solution while at some level offers a solution to fix(cover up) the problem IMO it still doesn't make any allowance for timber movement, let's say Dan waits until he thinks the crack has opened up as far as it will, let's say he can measure the MC and let's assume it's 12%, then he covers up the split, What happens when he gets an extended dry spell? Does the inlay split down the middle? or the glue lets go and opens up another gap. What happens when he gets a 2 weeks of rain? Does the table crush the inlay? Does the table break the biscuits at the outer boards?
Further to Skew's suggestion rout out the split (to full depth) glue the in piece, then if it was me I'd cut the breadboards off and not replace. Cut them off first makes the routing easier You have control of the top with all the clips holding it down, the breadboard end is largley redundant.
Pete
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19th November 2012, 10:07 AM #18New Member
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Lots of good suggestions here guys - thanks a lot
I will have a think over the various ideas an see which one is practical and achievable. I agree tho that the only true fix is to remove the ends and re glue/clamp the center board. I need to maintain the O/A length as the frame is fixed, so whatever happens the breadboards have to go back on..
Just need a week off to do it properly, and herein lies the problem...
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27th November 2012, 01:03 PM #19... and this too shall pass away ...
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Had a similar problem about ten years ago. Before I started woodworking I bought a table made in Asia of mahogany, but it had no breadboard ends.
Nevertheless, a couple of the joints at one end opened right up. They were T&G, so the gap did not extend all the way through the table, but it was pretty ugly.
I decided to go for a solution that was quick and dirty ... if it did not work I could have another shot.
Once I was fairly sure the gap was no longer growing I stained the inside of the join to match the remainder of the table and filled the gap with crystal clear fibreglass. The top was refinished and rubbed back by hand to a mirror gloss. I could see the repair, but nobody else could unless I pointed it out.
The bigger problem for you is likely the breadboard ends. Made the same mistake myself in the past.
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27th November 2012, 03:47 PM #20GOLD MEMBER
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What I find interesting is the clean break. Normally a glued joint is stronger than the timber and hence its the timber breaks away. What type of glue did you use?
What Rusty said but I'd go a bit further in that whilst its clamped up I screw a rip of 12mm ply to the underside joint. But best to wait and see what the rest of the top will do. GoodluckExperienced in removing the tree from the furniture
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28th November 2012, 12:56 PM #21New Member
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Hi Rod, I used Titebond Original Wood Glue. The ply stop is a great idea, should have thought of that before . I suspect the joint that broke was the weakest link as it was the last joint I glued due to logistics. I glued up 2 equal sections, then glued the 2 sections together as the final joint, probably not the best way, but that all i could do with just me myself and I unfortunately.
Re the fix suggestion -
...To fix the problem, I would remove the top from the table, glue the split, clamp up as per the original top fabrication, when dry remove clamps.
I assume after the top is removed, I would then somehow remove the breadboards before the next step of gluing the split and clamping, otherwise it won't compress when clamped. Then T&G the breadboard back on (dry joint - pinned)
Might be a job for the xmas hols..
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