I'm going to rebond my alu steerer to my crabon fork, I have some of this at home, will it do the job or shall I pop out and get some different epoxy stuff?
Unless there are significant gaps to fill I wouldn't use a 'putty' style adhesive - the high filler loading often interferes with bond strength whereas a lower viscosity epoxy will more effectively 'wet' the bonded surfaces. If you have plenty of time, use a type that require days to cure - pre heat adhesive and catalyst (water bath around 40 deg.C) to reduce viscosity which will both ease mixing and wetting out, but try it on scrap first to establish working time at the higher temperature.
Presumably you've seen this: https://www.lfgss.com/thread100699-15.html post 715 onwards.
Unless there are significant gaps to fill I wouldn't use a 'putty' style adhesive - the high filler loading often interferes with bond strength whereas a lower viscosity epoxy will more effectively 'wet' the bonded surfaces. If you have plenty of time, use a type that require days to cure - pre heat adhesive and catalyst (water bath around 40 deg.C) to reduce viscosity which will both ease mixing and wetting out, but try it on scrap first to establish working time at the higher temperature.
Araldite 420 might be worth looking at?
(waits for someone who knows more to comment...)