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Old 02-18-2016, 10:28 PM   #1
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premade laminate countertop - miter joint questions


Greeting all:

I started down the path of installing laminate counter tops and even posted asking some general questions. http://www.diychatroom.com/f80/order...please-305745/ Somehow life got in the way and I am finally ready to install the counter tops. I ended up buying ready made counter tops with features to clamp the corner 45deg joint using miter bolts. http://i1199.photobucket.com/albums/...18_2058031.jpg This evening I looked at the hardware that I bought to join the two halves and it appears that I bought surface mounted draw brkts: http://i1199.photobucket.com/albums/...18_2100511.jpg I have no experience with either the conventional miter bolts or these brkts. Anyone have experience with both and what style do you prefer? With the premachined pockets for the miter bolts, it would appear to restrict me a bit in where to install these draw brkts.

Second question. My corner lazy susan cabinet box has an upper panel. Therefore I will not be able to crawl into the lazy susan cabinet to install and secure the hardware (unless I cut a large hole in the upper surface). My thought is that after loose fitting the two halves, I set the counter top up on saw horses in front of the cabinets, make the joint assembly and then slide the counter top asm into place (I have recruited my wife to help with the install). Sound reasonable or would you cut an access hole in the upper cabinet surface and do the final fastener adjustment with the counter top asm in its final resting place?

Next question: At the big green box where I bought the counter top, they had a special glue for the seam. I would prefer not to buy another specialty liquid if I really do not need to - I have way too many partial bottles of stuff already. Looking at several web pages on installing counter tops several mentioned using a waterproof wood glue for this joint. I'm fond of construction adhesive (specifically PL375) and the counter top background color is reasonably close the the adhesive. Mistake to use it? Its water base instead of solvent base so cleanup is easy.

Finally, I was also planning in using the PL375 to bond the counter top in place. I see in several web pages that I looked at mentioning using small angle brkts and screwing up into the counter top to secure - your thoughts? Thank you for reading this and I look forward to your answers.
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Old 02-19-2016, 12:37 AM   #2
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How long is the short side of the L? Is it too long to assemble on horses then install in one piece? If you do install in one piece, I would suggest a dry fit first just in case the top don't fit the wall.

Wood glue will be fine in the joint. I have never used that type of joint bolt I always used the ones like below.

PL375 will be OK to glue top down to the cabinets and the joint also if you wish.
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Last edited by BigJim; 02-19-2016 at 12:40 AM.
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Old 02-19-2016, 11:11 AM   #3
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BigJim:

THank you for responding.

I think I'll buy a set of the conventional miter bolts (such as the one you have in your post) before installing the countertop tomorrow. I do intend to loose fit both pieces of the "L" in order to see what adjustments I need to make to the backsplash before gluing the joint and bolting it together. The short leg of the "L" is a bit over 5 ft - we should be able to join the two halves together in front of the cabinets and then gently lift and slide the c'top into place.
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