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SouthwestCNC
Young Croc Joined: 27 November 2015 Status: Offline Points: 830 |
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The lumberjack is my no.2 pu in all fairness. Just never as neat to use I find. and more expensive than soudal ;) Edited by SouthwestCNC - 12 April 2017 at 6:02pm |
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I-shen Soundboy
Registered User Joined: 21 December 2016 Location: Big Smoke Status: Offline Points: 375 |
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I got a good deal on Lumberjack, which was why I was still using it up three years on. However the best eBay deals on Purocol are about £6, and a business address around the corner... I'll order some now and try it out over Easter.
Thanks for the tip. And apologies to the OP for hijacking the thread 🤔
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Dub Specialist Sound
Old Croc Joined: 15 November 2013 Location: Smethwick Status: Offline Points: 4873 |
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No worries I Shen
all great info tbh, thanks all for all advise
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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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markie
Old Croc Joined: 31 October 2005 Location: Sunny Liskeard. Status: Offline Points: 4570 |
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[/QUOTE]
The lumberjack is my no.2 pu in all fairness. Just never as neat to use I find. and more expensive than soudal ;) [/QUOTE] £4.50 a tube at Trago. |
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If it's got wheels or tits it's gonna cost a fortune
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SouthwestCNC
Young Croc Joined: 27 November 2015 Status: Offline Points: 830 |
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I pay £3.60 for purocol. £4.20 for lumberjack. Westward
Edited by SouthwestCNC - 12 April 2017 at 8:06pm |
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snowflake
Old Croc Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3118 |
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I found that waiting till the glue starts to foam before putting the joint together increases penetration into the wood and reduces the amount of messy dripping. search the forum for debate on whether PU glue is worth the hassle.
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SouthwestCNC
Young Croc Joined: 27 November 2015 Status: Offline Points: 830 |
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I find it easier than PVa personally. One scrape of a chisel and it's gone completely . PVa needs sanding off and stains But it's not everyone's cup of tea and takes experience with it before you will feel comfortable with it. Using it from a bottle gives it a bad rep. In a gun it's a different product, the gun itself plays a big role aswel. I use a timco which pretty much stops all pressure as soon as you release the trigger without using the button. Guns like powerpros are great for sticking skirting on with gripfill but useless for pu. You will press the button multiple times, put it down and find when you return there will be a pool of it wheres it's carried on spewing out. The button is also too stiff, you want a gun with a stiff trigger easy button. Not other way around.
Edited by SouthwestCNC - 12 April 2017 at 8:35pm |
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SouthwestCNC
Young Croc Joined: 27 November 2015 Status: Offline Points: 830 |
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I believe pu to be a stronger joint than PVa with birch ply for sure, well considerably. There is a glue that's stronger again I've yet to try on a cab and that is aerolite 360. Scores higher in tests considerably over any other wood glues.
Edited by SouthwestCNC - 12 April 2017 at 9:07pm |
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snowflake
Old Croc Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3118 |
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pva cleans off with a damp sponge before it dries.
most glues are stronger than the wood they are joining. comes down to joint type and glue penetration. see recent threads. |
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I-shen Soundboy
Registered User Joined: 21 December 2016 Location: Big Smoke Status: Offline Points: 375 |
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<Checks brand of caulk gun> The Powerpro does require a wise hand to release pressure about a minute before you're finished, it's true. Best online price for Timco caulk guns, before I pull the trigger? (Pun fully intended 😁) Damn, this is becoming a costly thread... |
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SouthwestCNC
Young Croc Joined: 27 November 2015 Status: Offline Points: 830 |
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I agree completely. Penetration definitely plays a big part with all glues in natural woods, I don't think it's as applicable on end grain of ply as it once was before phenolic glued birch seems to have become the standard, if you can imagine the ply laminates that are already saturated both sides in phenolic glue that has the full un restricted ability to penetrate into that laminate effectively sealing the grain making say any water or solvent based glue a lot less effective at penetrating it. So bond strength with ply can be as much the bond to the phenolic glue as it can be the grain. Edited by SouthwestCNC - 12 April 2017 at 9:44pm |
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I-shen Soundboy
Registered User Joined: 21 December 2016 Location: Big Smoke Status: Offline Points: 375 |
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I don't believe the phenolic penetrates the ply laminates to an appreciable degree - the plys (surface and core) will suck up considerable amounts of liquid on their edges. Stain some ply, then section: Observe how deeply the stain penetrates the edges but not the first phenolic glue layer (staining a surface, the stain won't penetrate past the first ply, but staining an edge it will go a few mm deep). The phenolic resin is waterproof, but it doesn't impart this to the wood plys. Plywood in a puddle will warp and swell, but the glue does a job of holding it all together. |
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