Very clever entry door design

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crinklystarfish
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Re: Very clever entry door design

Postby crinklystarfish » Sat Nov 09, 2019 8:43 am

Same guy.

Interesting comments re Sika product. Looks like something went badly wrong. Might try and search through his other videos to see what happened.

Not sure riveting and bedliner is the way forward; for anything... ever.

https://www.youtube.com/watch?v=Ut_8y9h2B_E

Ivan C
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Re: Very clever entry door design

Postby Ivan C » Sat Nov 09, 2019 11:03 am

I used Stixall in the van and in the truck - it was originally an Everbuild product, now bought over by Sika.
Having had a little "dismantling" to do I can say that PROPERLY preped and applied in the case of fibreglass the bond is stronger than the parent material, the only way to seperate two skins is to cut the adhesive.
It adheres equally well to roughened aluminium - it will however peel off if the surface is not roughened.
As with so many things RTM before using!
I wonder which "Sika" he was using?
Riveting aluminium to fibreglass wouldn't seem a good idea, unless he was able to get to the reverse side and use washers, the fibreglass will just crumble as the rivet expands.
Ivan C

crinklystarfish
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Re: Very clever entry door design

Postby crinklystarfish » Sat Nov 09, 2019 5:17 pm

I don't want to do the guy an injustice but unless there's something compelling I too have an initial notion that it's a case of PICNIC (IT-tech speak: Problem In Chair Not In Computer).

The appropriate Sika stuff used properly is probably holding a good proportion of the world together very effectively indeed.

RTFM should go without saying but it's surprising how often consumers imagine they know better.

I hope the chap's solution works but I'm not terribly optimistic.

Ivan C
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Re: Very clever entry door design

Postby Ivan C » Tue Dec 17, 2019 1:14 pm

This set me thinking and so I did a test piece, two pieces of 50mm aluminium box, 300mm long.
Preped by a flap disc and 3mm bed of Stixall.
My spare wheel, approx 150kg, is happily swinging from it.
Later I shall move the eye bolts to opposite ends of the box sections as a shear test.
Ivan C
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crinklystarfish
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Re: Very clever entry door design

Postby crinklystarfish » Wed Dec 18, 2019 8:38 am

No surprises, but good to see. Thanks for sharing Ivan.

End-user errors happen - it's just the way of things; but is rightly something that should be taken on the chin with a bit of humility.

I don't know if the chap who had Sika failure has any proof of intrinsic product failure but in general terms it must be irritating for manufacturers who take a slating because some numptyish end-user ignorance sees an entirely avoidable failure followed by said numptyish end-user lashing out and blaming anyone and everything but themselves.

Ivan C
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Re: Very clever entry door design

Postby Ivan C » Wed Dec 18, 2019 5:26 pm

Numtyish end user...........ho hum :D
I changed the eye bolts yesterday evening as planned, to give more of a shear on the bond and surprise surprise the joint was open this morning.
Closer inspection showed the joint had been nicely filled with no voids but the only cured material was in an approx 5mm border, inside this it was still soft.
Impressive that 5mm wide x 600mm long was taking that amount of weight.
I read the side of the cartridge (as any good numpty does- after use) and Everbuild state that the cure will spread into a joint at about 1.5mm/24 hours, less on non-porous material, like aluminium.
My test piece was bonded about 7 days ago, so that sounds about right.
So the morals are:-
Read info before use.
Expect a broad or thick bead to attain full strength only after a number of weeks.
I have dismantled beads as broad as this and they have been cured right the way through so it will happen - but think in weeks.
Ivan C

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Brian-reynolds
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Re: Very clever entry door design

Postby Brian-reynolds » Wed Dec 18, 2019 7:12 pm

Very interesting Ivan, good work.

boyman
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Re: Very clever entry door design

Postby boyman » Wed Jun 03, 2020 6:40 am

You gotta splash some water on it and wipe it before closing when it is raining or else interior would be damp. But would love just an automatic long steps but it could hide under the engine.


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