I had to replace my thermocouples and was extremely frustrated -> they are held in by short little m1.5 set screws. Into Aluminum! They were, predictably, bound in and could only be removed with a brand new Allen wrench.
PLEASE redesign the hot end block to use bigger screws. Personally, I favor M3 cap screws (there is no good reason to use set screws other than aesthetics) but at least go to a minimum of M2.5. The M1.5 will always bind and quickly destroy most Allen wrenches and lead to more broken isolation tubes.
Please post your suggestions for hardware features
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