Hi, i’m designing a delta printer and i was wondering if i should bother with auto tramming? my design is extremely solid, with a all metal laser cut frame and good bracing. my thoughts are that a auto tramming sensor will just complicate things without much improvement of the print quality… any thoughts on the matter ?
also i really want to use a glass bed
If you use a glass bed then you can’t use an inductive sensor, but you can use a mechanical endstop like most kossels.
@James_Malenko what if i put a, say 4mm aluminium plate under it ?
You’d probably have to have pretty thin glass.
You could also use FSRs. Auto tramming is in a way more helpful for deltas because of the ability to accurately calculate the delta radius at print time.
thanks for your help everyone, what i think i’ll do is order one of these inductive sensors and test it for me self.
@Alex_Lee what model sensor do you use?
Having problems finding a non-bulky sensor that can work through 3mm glass with a mm or two of ‘working room’.
Bed, extruder, and/or end effector all are subject to expansion when heated. Auto tramming is helpful for dealing with that for sure.
Biggest problem are all inductive sensors rate the sensing distance on Ferrous metal and usually the reduction factor is halved for alloy sensing. I have just tested some flush mount inductive sensors for you. An 18mm diameter Carlo Gavazi IA18ASF08DOM1, 8mm sensing worked fine through 3mm glass to aluminium. The 12mm diameter sensors I tried with a sensing distance of 5mm didn’t work, but one with an 8mm sensing range might, although not as common.
I don’t think you’ll find a 6mm diameter sensor in an 8mm sensing range even if you go with a non-flush type.