RK1
Limitron KTS-R-10 Bussmann Fast-Acting Fuse KTSR10 (Pack of 6)
You will find the CPC2G Ceramic Pourable Compound stays put without running down vertical surfaces.
Limitron KWS-R-40 Cooper Bussmann Fuse KWSR40 (Pack of 8)
A nice touch is that it's branded, which adds a bit of credibility to the purchase.
Limitron KTN-R-15 Bussmann Fuse Cooper KTNR15 Old Stock (Pack of 6)
This MEKP 8oz size works great with small fiberglass mold projects.