scanning z probe mounting trouble
-
I am switching over to the roto CAN toolboard with scanning z probe. I downloaded the SZP step file and it has the PCB at 3 mm thick which does not match what I have in hand which is ~1.22 mm. I assume this is a mistake, however...
reading the documentation it says to mount the coil 1-2 mm above the nozzle. I cannot find any fasteners that are thinner than 2mm head such that they would scrape along the bed and prevent the nozzle working. Is the thicker pub representation attempting to hide the fastener head? I can find no pictures of actual mounts.
-
I found out that M2 Flathead is OK - leftover from Klicky PCB probe hardware set. Minimal protrusion.
-
will look into that. The M3 button is about 1.8 mm. The M3 flat doesn't recess so it about 1.5 mm above. So these can work but leave very little room for error.
-
@jltx See https://docs.duet3d.com/en/User_manual/Tuning/scanning_z_probe_calibration#mounting
You can use M2.5 countersunk screws (often supplied with smaller fans) to mount the coil, which stick out about 0.7mm. M3 countersunk screws stick out a bit further. There are M3 screws with low profile heads, usually between 0.8mm and 1mm; search for "m3 ultra low profile thin head".
Ian
-
@jltx having the coil 3mm higher than the nozzle would also be OK.
-
@jltx Have a look at M2.5 low profile bolts. I recommend the ones with a torx slot as its easy to strip M2.5.
I personally use the M2.5 ones and the head is about 0.8mm thick
https://www.aliexpress.com/item/1005005070119421.html