How strong is PL premium???

[thrillhouse700]

So yesterday we figured out exactly how strong PL premium was. Just thought everyone might wanna know

We PL premiumed the bottom half of our motor mount in and to keep it down we put 2 cinder blocks on it. We knew the PL would squish through and contact the cinderblocks but figured who cares we will just rip them off later. Well it was a flawed logic more than likely due to being tired and having a case of the f*%#-its.

The brick in the pic was laid back on for the picture after we got it off, but it took 2 5lb sledge hits, 2 or 3 big kicks, and then finally broke the brick after some rubber mallet hits.

So when people have a question on what to use to glue things together or are wondering if it will hold their transom to the back wall the answer is PL Premium and YES.

 

[erikgreen]

Re: How strong is PL premium???

Yep, it works well.

Just FYI, I'm currently tearing apart some repairs from two years ago to make way for a transom re-core. That includes a deck attached with PL and other parts attached with epoxy glue ("peanut butter").

The PL is far weaker than the epoxy glue... easier to break apart, even though the underlying materials usually are what fail (go figure).

But it's still probably stronger than most boats need, is pre-mixed, cheaper than epoxy, and comes in nice tubes.

For myself I'll use it only when I'm doing something cosmetic or trivial since I want my boat to be as light and strong as possible, and globbing on PL won't help with that. It's also not possible to grind and paint PL.

PL also doesn't span gaps like epoxy putty can... it's a glue, not a filler or casting material.

Erik

PS: As an experiment I fixed a couple holes in my driveway with epoxy paste mixed from thin boatbuilders' epoxy and coal slag I had for sandblasting. The patches are stil in pristine shape, I just wish I'd smoothed them out better

 

[Azonic]

Re: How strong is PL premium???

now that is science in motion there!

who cares ft lbs torque settings hold ratings...

5lb sledge proof is good for me!!

 

[Bondo]

Re: How strong is PL premium???

PS: As an experiment I fixed a couple holes in my driveway with epoxy paste mixed from thin boatbuilders' epoxy and coal slag I had for sandblasting. The patches are stil in pristine shape, I just wish I'd smoothed them out better

Ayuh,...

I've been using those PL adhesives lately,... It Is pretty impressive glue...

 

[jonesg]

Re: How strong is PL premium???

hahah,
well I used a barrier layer of saran wrap to keep things from sticking,
thats a good idea eh?

nope, it sticks like stink to plastic too. At least the saran rips apart easier than the PL.

 

[EddiePetty]

Re: How strong is PL premium???

......'taint it amazing what you can learn when ya' read the directions!!!!

PL Premium is a polyurethane adhesive that provides superior results and is safer to use. PL Premium generates three times the power of traditional construction adhesives. It may be used inside or outside and will last as long as the surfaces it joins together.

? 3 times stronger than ordinary adhesives
? Water and weatherproof
? Bonds to wood, metal, stone, concrete, masonry, bricks
? 100% Polyurethane
​

FWIW...Ed in 'ol Virginny

 

[thrillhouse700]

Re: How strong is PL premium???

ummmm yeah we all knew it bonded to all those, it wasnt a post to show that it did, but actually how tough it is.

 

[sprintst]

Re: How strong is PL premium???

I decided one day after framing that I didn't like a stub wall that I put in with a Hilti gun and PL400. I wanted to change the angle of the wall and just knock it down and reframe it. The wood and PL went with the cement as I tried to move the wall. The PL would let go of the concrete and the 20 year old concrete pulled out in chunks.

Make sure it is given time to set...and that stuff is going nowhere.