heatbed screws are very very tight
Hi ya'll,
I'm assembling my MK3 and it seems to be going pretty well. One problem though: I'm on part 7, step 17 (assembling and installing the heatbed). It seems that some of the nine M3 holes are very tight for me (even if I test running the countersunk screw through without the plate in).
I think the powercoat has gunked up the threads a bit. Is it acceptable to run a M3 tap through the holes to clean out the powercoat as needed? I’m worried that I’ll break a screw otherwise.
Any feedback would be appreciated 😉
Kevin
Re: heatbed screws are very very tight
Stewart, Kevin,
I would do that carefully,
you need to get the tap to clean out the existing threads rather than cut new ones
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: heatbed screws are very very tight
Thanks Joan! I did that and it worked great! I intentionally left a bit of the powdercoat skunge to serve as a bit of threadlock. My printer is now assembled and I got a great first print! For others other steps I did after initial testing:
* Z cal quite carefully with a test pattern of 9 squares across the whole plate - this allowed me to put in a slight abount of bed level correction (just tweaked until the 20um layer looked the same on all 9 parts with good squishing.
So much nicer print results than my old trusty Makerfarm pegasus (which I'm upgrading from). Now on to printing the new extruder parts in PETG...