| Mikey... you can check at Michaels as someone has already suggested. You might not find the foam as a "sheet" but as precut pieces for crafts; just find one that'll fit.
For making a template for a Harmon (Harmon brand) I just laid a sheet of gasket cork on the workbench and traced the inner (smallest) line that resulted when I rolled the mute in a partial circle. Then add the width of cork and trace another line outside the first. Make it a bit oversize if you want; an X-Acto blade trims it up really well. I used contact cement to apply.
Edit: oh yeah... I forgot... I used cork on the Harmon mute because I needed to thicken the cork up... the mute was sitting way too deep inside the bells of both my B1 and MR. I have used the thick foam from Michaels for making replacement cork "pads" for a straight mute.
The cork has yet to fall off my JoRal bubble mute! |