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Joseph or George suggested we try this since they changed the loctite compound - have yet to try. Have found you go through less drill bits thinif you drill really slowly with a lot of pressure on. (Even the supplied drill bits work when you do this but you need one per side)
TM-
Yup, drill speed is crucial depending on what material you are drilling out. The trick with bolt heads is low speed, medium pressure and, crucially, use cutting fluid to lubricate and cool it. Not easy when you’re drilling side-on and it makes a mess, but I got bollocked many times as an apprentice about the correct use of drill bits.
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Just drill, one drill bit does both sides, no need for faff.
jj72
Rhobbs
A mate ecently explained his process to me - he puts a long 4mm Allen key in the bolt head and heats the key with a butane torch. The heat transfers to the bolt and softens the threadlock and the bolts come out easily. I’ve not tried it myself yet but it sounds good, and he reckons it works well.