Box builders yellow glue |
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snowflake
Old Croc Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3122 |
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expanding glue requires you to clamp the joint (even clamping at right pressure) for several hours. PVA you just wack a couple of screws in and the glue pulls the joint together rather than pushing it apart.
joints that glue multiple plys to each other was discussed a few weeks ago. couple of years ago there's some threads about laminating ply and mdf with flexible sealant, bitumen and other methods of damping panel ringing. |
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Father-Francis
Old Croc Joined: 24 October 2007 Location: Kenya ,Denmark Status: Offline Points: 2760 |
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Jo Bee me work with dem glue day in day out , this kind of glue will never go past the first ply , unless we use really cheap plywood, if you want something that goes thru the first ply use normal white wood glue and thin it down abit with water , I've been a carpenter for over 20yrs me knows what me talk about , let's not make any sales promotions for stuff that don't work the way one seems,to think , https://www.craftsy.com/blog/2015/03/types-of-wood-glue/ |
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Music is the strongest form of magic.(+45 31879997)blakmanpro@gmail.com, foa@sweetboxaudio.dk
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Dub Specialist Sound
Old Croc Joined: 15 November 2013 Location: Smethwick Status: Offline Points: 4873 |
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Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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SouthwestCNC
Young Croc Joined: 27 November 2015 Status: Offline Points: 830 |
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There's loads of glue strength tests. None of them are consistent with completely different results. some having an agenda toward pushing a certain product. And none are done with ply so all irrelevant really. If it passes a drop test happy days. |
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SouthwestCNC
Young Croc Joined: 27 November 2015 Status: Offline Points: 830 |
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Ive got a pu glued mt121 an apprentice made a mess of, I'll make a video lifting it to a good height with the forks tomorrow and dropping it and upload it here.
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WILLZTHRILLZ
Registered User Joined: 21 April 2014 Location: up here Status: Offline Points: 201 |
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I hope the apprentice won't be standing underneath it lol.
We all have to learn somewhere. Unfortunatley , this country has no more manufacturing ability and kids have no chance of much of a future in traditonal engineering. More is the pity coz skills are being lost in one or two generations. Will
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shagnasty
Old Croc Joined: 30 July 2007 Location: Guildford, UK Status: Offline Points: 7685 |
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TBH, PU glue has near to no kinectic potential for joint seperartion, I PU and pin a lot of builds, screws are really optional, if you have he time PVA is great, but TBH, is not as strong a PU in shock, Pu cures faster, makes a ridiculously strong bond and if you set your joint correctly (if you need gap fill use Gripfill and HUGE clamps) it only expands to release excess glue. I would only use the gun product on house bashing, the Joiners Mate screw fix sell is good as it gets, if it cures in the pot, don't keep your glue in pond! I machine very tight, the gun PU is too viscous and holds faces apart, generally just DIY spec IMHO (I used on a flat pack kitchen, great, but I would say my leads trunk have better tolerance than that!) Back on topic, leave your caulking gun on the shelf, make nice parts and buy a small tub of joiners mate.... I don't have lot of experience with it (like only 70L plus used) but it is cheap, works, and works welll.. |
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SouthwestCNC
Young Croc Joined: 27 November 2015 Status: Offline Points: 830 |
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Lol, I wish id though of that before I let him go. Yeah no attention to detail and always in a hurry to get home with no commitment. Now have a 50year old joiner because young lads just don't cut it. |
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snowflake
Old Croc Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3122 |
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I use the Titebond stuff that won that test. It's got a nice nozzle that allows easy application to the edge of boards and it doesn't get blocked with old glue. the gorilla glue they tested is possibly the worst PU glue I have tried - it foams too much and is very weak. |
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SouthwestCNC
Young Croc Joined: 27 November 2015 Status: Offline Points: 830 |
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Which titebond tho? In other tests tight bond 1 & 3 scores the same as pva. Only titebond 2 that is any better than your standard pva.. Apparently.
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70,s hero
Young Croc Joined: 14 December 2014 Location: bristol Status: Offline Points: 637 |
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Some one left a 5ltr of PVA in my van this week with the lid not screwed on, I would post a pic but its too embarassing, I guess PVA and PU have thier advantages, personally I use PU but a good test is how easy both of them can be pulled off your hair on your skin when set.
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Top banana
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kevinmcdonough
Old Croc Joined: 27 June 2005 Location: Glasgow Status: Offline Points: 3751 |
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Yeah totally agree with this, quite a few years ago I built a load of cabs with gorilla glue and it was terrible (and I realise gorilla glue may not be representative of all pu glues, other brands may be better), and after seeing that same report changed to titebond III - night and day. Cabs have held up amazingly well not a single issue, and as said the long thin "slit" nozzle it has is perfect for running glue along the edges to be fixed. I wouldn't use anything else now. K
Edited by kevinmcdonough - 16 April 2017 at 12:52pm |
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