Quote:
When working with Styrofoam to build large industrial freezers I have used a dowel rod slightly larger then a pencil to kina line things up in between the 2 coolers you could do the same that and to even up the gap you can use a sanding block with some 60=-100 grit paper to keep from having to use so much caulking I have used contact cement/ rubber cement to successfully glue Styrofoam before to hold it in place long enough to put the refractory "mud" on
When working with Styrofoam to build large industrial freezers I have used a dowel rod slightly larger then a pencil to kina line things up in between the 2 coolers you could do the same that and to even up the gap you can use a sanding block with some 60=-100 grit paper to keep from having to use so much caulking I have used contact cement/ rubber cement to successfully glue Styrofoam before to hold it in place long enough to put the refractory "mud" on