Topic: My cafe seat

[Alan F.]

In a past life spent working as a shipper, we used expanding foam regularly.  The trick was to place a large plastic sheet over the box and tuck it inside.  (the sheet would then overlap the edges of the box by about half the box's width all around) then add the A and B components.  The plastic sheet prevented the foam from adhering to the interior of the box, but would allow it to expand upward.  Using this method you'll have individual blocks of foam that you could replace at will if an error were committed.  If that's an undesirable side affect, I'd run a bead of wood glue around the bottom of the area of the buck you're filling, then tuck a plastic sheet down inside and smooth it out against the interior, then add your A-B foam.   Clear as mud?

[seven]

Thanks for all the suggestions guys.

I didn't even think of funjimmy's idea about the foam gripping the sides of the ribs then expanding and pulling themselves away from the base. Which would mean that sealing the junctions would not be enough.

Another way would be to drill holes in the base of every section, tape the holes over and when the foam starts to expand it would force the tape away and give some pressure relief while it was in expansion mode. You still need a bond with the sides so the foam is not moving around when comes time to sand and apply the bondo.

Look to tell you the truth, the expansion is probably acceptable as long the curved ribs do their job as sanding guides or stops.

[FunJimmy]

Look to tell you the truth, the expansion is probably acceptable as long the curved ribs do their job as sanding guides or stops.

+1. You just need to take that into account.
No system is perfect.

FJ

[Jinxracing]

I was watching "Ask This Old House" the other day and Tommy was helping a homeowner install a new front door. He used an expanding foam to fill the voids between the door frame and the wall, but used what he called a "low-fill" foam to keep it from expanding too much and bowing the door frame. Using an expanding foam with a lower rate of expansion might solve the problem next time.

Jinx

[seven]

OK, just an update on my project.

While working on the cafe seat I have been side tracked by the original seat. A mate persuaded me to update the original lump which I must admit turned out OK. What do you think?







I'm still working on the original cafe seat but it's going slow. Here's a progress pic.



Here's my to do list:

1. Cafe seat (in progress) 2. Clubman bars (done) 3. Rear sets (purchased) 4. Powdercoat wheels black 5. Fit 18 inch rear rim 6. Bobbed rear fender and new front fender 7. Repaint tank black 8. Upgrade blinkers and taillight (purchased).

Cheers

[Alan F.]

Looking good Seven.
-Alan

[HedNut]

Awesome!! I gotta watch this... looks like you're doing great things here.  I'm Especially looking forward to seeing it with that K8 tank.  That's what I have to work with too.
Cheers!

[seven]

Thanks Guys,

I'm kind of hangin out to see how the seat turns out myself.

Your words are my fuel............................

[rustrocket92]

lookin good man. You have more patience than me.