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27th February 2012, 11:02 PM #1Member
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Glue for Laminating Formply Router Table Top
Hi everyone,
I wish to laminate 2 pieces of 17mm Formply together to make a router table top measuring 1200 x 700 x 34.
I would be interested in your suggestions as to what would be the most suitable glue to use & any special preparation requirements.
I had thought of possibly using the following
1. Spraypack Contact Adhesive
2. 2 part Araldite K 106
I would welcome your suggestions & advice.
Regards,
Alan
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27th February 2012 11:02 PM # ADSGoogle Adsense Advertisement
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28th February 2012, 06:21 AM #2China
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First you will need to remove the surface by sanding, formply is specificly designed to resist anything sticking to it, then I would use the Araldite
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28th February 2012, 03:02 PM #3GOLD MEMBER
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Use screws from underneath. I have seen reports of this stuff bending when used for a router top, not saying your will but a heads up to keep an eye on it.
CHRIS
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28th February 2012, 03:14 PM #4GOLD MEMBER
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28th February 2012, 07:49 PM #5Senior Member
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Form Ply has a plastic coating to allow for the release of the ply from the concrete.
I have my doubts if any adhesive will stick to it, the only option is to strip the coating from the two contact surfaces by sanding. This may take some effort and time ( Good luck). If you are able to sand back to the wood surface then glue with Titebond
Why dont you check out your local salvage yard as you my be able to pick up a suitable size laminated plastic sink top that has been thrown out.
Regards
Mac
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1st March 2012, 10:44 PM #6Member
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Thanks everyone for your replies.
I will give the sanding a miss & probably go with just screwing from underneath.
Thanks for the heads up with the formply bending, but it will be well supported.
I'll still keep an eye on it.
Regards,
Alan
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2nd March 2012, 10:51 AM #7The Russel Coyte of Woodworking
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Hi MATE
I just spotted this post, I used form ply for a router top for an extension to my table saw and it bowed pretty badly...I have a Makita router.
If you are set on using form ply then bond it with MDF or hardboard and screw in a some hardwood frame. After my last desaster I went for two 19mm MDF and braced it, so far it has remained dead flat.
I would not use contact adhesive, I have had some laminate delaminate on me with the stuff. I just use titebond and a roller to get a good even spread.
I hope this helps!
Milo
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2nd March 2012, 11:59 AM #8
I would use AVS Av180, specifically designed for MDF.
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6th March 2012, 10:35 PM #9Member
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Thanks for the reply Waldo & Milo.
I'm a little surprised that by joining 2 x 17mm pieces of formply (34mm thickness) that it would bend with the weight of a router hanging off it.
I would have thought that the cross layering construction of plywood (especially double thickness) would counteract any tendancy towards it bending.
I will give this more consideration.
Regards,
Alan
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8th March 2012, 09:08 AM #10
Is it uniform??
Hi
Over the years we have looked at using formply however the draw back always was that it wasn't of a uniform thickness. Remember it is only designed to have one side used.
Regards
Grahame
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15th February 2021, 05:59 PM #11New Member
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Better Much Later Than Never
After I glued two 250mm x 100mm bits of Formply together with Titebond II and having them separate when they fell off the drill press I googled the question of can Formply be glued and this thread popped up ....... it seemed somewhat lacking so I decided to experiment. I took two bits of Formply about 300 x 50 and ran the orbital sander with 80 grit sandpaper over half the length of them, roughing them up and only going through to the wood accidentally in a couple of small spots. I coated one piece with Titebond II over its full length and clamped them together HARD for about an hour on a 34 degree day. About 24 hours later I threw them very hard at the concrete floor and after that treatment the end that was unsanded was not stuck any more. I took a chisel and prised them apart, which tore the ply apart on the sanded end. With a chisel end a lot of pressure I could still get between the two pieces but to all intents and purposes they were pretty well stuck - especially if they were only being used in a low stress application such as a table top.
Hope this helps someone down the track ..........
IMG_20210215_150521.jpgIMG_20210215_151453.jpgIMG_20210215_150819.jpgIMG_20210215_150803.jpg
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15th February 2021, 07:17 PM #12Taking a break
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Yeah...ummm....I thought this would be obvious, but the black coating on Formply is literally designed so stuff doesn't stick to it...y'know concrete formwork and all....
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