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PostPosted: Wed Feb 15, 2017 2:53 pm 
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Hello Ultimatehandymen,

I'm putting in an L shape kitchen work top. Practised my male and female joints using a jig - all good, nailed the dog-bone cut outs for the connecting bolt. So the drama now is putting in biscuits, do they go in with a glue or not ? YouTube seems split on the subject, either PVA to seal the cut edges or PVA and glue for the biscuits, or glue for the length of the cut edge. Thanks in advance..


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PostPosted: Wed Feb 15, 2017 4:00 pm 
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Biscuits will do nothing to help hold the joint so that both halves of the w/top are flush - the chipboard core at the centre of the w/top is too soft. I'd just glue it with PVA, (or use clear or appropriate coloured silicone).

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PostPosted: Wed Feb 15, 2017 4:04 pm 
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The object of the biscuits is not to bond the edges of the worktops but to prevent any lifting between the two surfaces causing a slight step. The dog bone bolts pull it up tight and the biscuits keep it nice and level as long as you have not messed up alignment when cutting the slots. You usually slap some Colorfill in the joint line to seal it, so my opinion is you do not need to glue. :thumbright:

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PostPosted: Wed Feb 15, 2017 10:12 pm 
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Thanks chaps :-)


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PostPosted: Wed Feb 15, 2017 10:15 pm 
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I'm in complete agreement with DWD. As to PVA sealing the edges, well, it just CAN'T. Most PVA is D2 (not waterproof at all - for interior furniture) or D3 (semi-waterproof - rated for exterior use in sheltered environments) and therefore if you use PVA to seal a joint you'll potentially be storing up trouble for the future. ColorFill, etc are much more suitable sealants IMHO

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OK, I'm an "old school" chippie, so please don't ask me to do a bodge job - I didn't bring my horse today and in any case you don't seem to have a hitching rail!


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PostPosted: Wed Feb 15, 2017 10:52 pm 
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I've never bothered with buiscuits on a worktop and haven't ever seen another pro use them either.
As for sealing the joint I always use silicone,it gives a brilliant seal and it also helps strengthen the joint.
Colourfill is great as well(especially if your joint isn't 100% tight) but it sets incredibly quickly and if you are under a cupboard tightening the bolts up on your own then it can cure quicker than you can get the bolts done up,tight.


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PostPosted: Thu Feb 16, 2017 12:07 am 
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im gonna deviate from the others here...

d4 pva.

colorfill is Fuc$ing sh*t

d4 pva you get enough time on your own to get the joints absolutely perfect.. or as perfect as the particular set of tops your working with allow. get plenty of wonder wipes to clean up and the job is perfect.

i have used silicone in the past also.

and bushboard do a silicone type sealant also... ive only ever seen it in my local branch of ids tho


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