Reparing BMW Multi Varo tank bag - new foam base

[SAAB93driver]

I have the BMW tank bag for my R1150RS. I don't use it much anymore and discovered the foam base has started to disintegrate. I looked online for advice and found I should use 1" thick closed cell neoprene foam to replace it. Cool, I bought a 1/4 sheet of that, enough to make about 3 bases. But cutting this stuff and having it look "good" seems to be beyond my ability or at least my cutting tool collection (including a hot knife). Any tips on how to cut this foam to size? Or maybe take it somewhere like upholstery shop?

[elkroeger]

try an electric knife. Pick one up at goodwill. Rich used one on my seat.

[flat_twin]

Our tankbags must be about the same age. Purchased new for my 2001 R1100RS and the foam bottom pad is coming apart. Where did you find the replacement foam? Thanks!

[SAAB93driver]

Our tankbags must be about the same age. Purchased new for my 2001 R1100RS and the foam bottom pad is coming apart. Where did you find the replacement foam? Thanks!

 

I got it here, closed cell neoprene foam, quarter sheet.

 

http://www.foamexpress1.com/Closed_Cell_Foam.php

 

I think I figured out how to cut it but it's difficult to keep it uniform. Sharp knife and single motion, don't saw it otherwise it gives a jagged edge, but it is hard to go back and correct the cut and have it look ok and hard to keep knife at 90 deg to material. So basically I made a sacrificial pad the first go around. I have enough material for 3 more so I have 3 more chances.

[lkraus]

It sounds like you have created some scrap for experimenting. I'd try compressing the foam while cutting, maybe with a piece of plywood with a crisp edge, or a steel straight edge. Use a NEW blade in a utility kmife or a rotary fabric cutting wheel..

 

Larry