Quoteleadinglights Wrong. A magnetic ball joint will have no movement until the seating force is overcome. (Edit: A rod end will have a small inherent movement particularly if working dry) The flex in an effector made of 1.6mm FR4 is very much less than error such as flexing in smooth rods, belt stretch stepper position compliance etc.. edit Mike You are correct when using the specs for 2 magneby Redemptioner - Delta Machines
Quotedc42 Good magnetic joints work for high speed printing too. My delta using Haydn's mag joints + Duet3D Smart Effector + E3Dv6 hot end will lift more than 1.5kg without disconnecting. The mass of the effector and hot end is about 400g. So I could push it to more than 4G without it disconnecting. I don't know why you think the static load is relevant for mag joints, as soon as you move the loby Redemptioner - Delta Machines
You guys are off in lala'vill if you think nozzle size does not effect the wall thickness... Of course the nozzle size affects the extrusion width if you move the same G-code between printers with different size nozzles. The nozzle size sets the area of pressure control between the last layer and current layer. If you take a 0.6mm nozzle settings and move it to a 0.3mm nozzle printer, the wall wby Redemptioner - Slic3r
QuoteEd3D Nothing stopping you using Triangle labs stuff if that's what you prefer but I think its silly to say E3D haven't contributed anything. The only reason triangle labs can exist is because E3D make their designs publicly available. Also unless you're into spectroscopy or similar I wouldn't make claims about the alloys they use - for all you know its not even titanium! Proof is in the pudby Redemptioner - Mechanics
QuoteEd3D The surface roughness of the heatbreak / nozzle is a critical feature of the breaks / nozzles performance. E3D have spoken about this before but having a perfectly smooth break isn't actually the best solution, there's a certain Ra value that seems to work best. Sorry but that is complete E3D propaganda, E3D has been questioned on this in the past an admitted as much as by saying it'sby Redemptioner - Mechanics
Duet definitely does drift a little over time in height on a delta, usually only about 0.01-0.02mm every 24hrs of printing (mine all move away from the bed). This does not seem to be an issue during the print (even on 3 week prints) but can mean you have to make a baby step down to correct for this if you wish to immediately print afterwards, homing makes no difference to this only a hard powerby Redemptioner - Duet
+ 1, Their products are far superior to E3D (not that hard really), the bore is perfectly smooth on both nozzle and heat-breaks unlike E3D....by Redemptioner - Mechanics
Ahh yes, the smaller the bed the closer the probe points can be, I forgot about this, just use to larger printers Op said 350mm bed so he is stuck with 20mm as well. Did you square up your printer to the top of you delta? Remember everything works from top down on a delta, so you should square your end-stops and bed with the top of the printer, I know I harp on about this point but it is theby Redemptioner - Delta Machines
Well there a couple of things here, firstly the G29 is not too accurate. With a best case scenario of 20mm square probe points (all the probe points the duet can handle) a 0.02mm variance in bed level won't be compensated for too well especially if the height error does not cross multiple probe points. Running G30 over the uneven bed surface when G30 assumes a perfectly level bed surface means thby Redemptioner - Delta Machines
You sure it is tower tilt causing the "random" like errors, looks a little more like it might be unevenness in the rail surface or the need for a little more preload on the bearings, although looks like tower tilt had the biggest impact on accuracy for youby Redemptioner - Delta Machines
My preferred brand of rod ends for 3D printers (and my other much larger toys that require a registration) is FK Bearings. Never had one fail, usually get extras when ordering in numbers and you can get them with a range of different materials as the internal bushing dependant on your need.by Redemptioner - Delta Machines
Quoteshadowphile One impression I got that neither of you pointed out (assuming I'm right) is that G30 does a best fit of a plane, and G29 actually adjusts the z-height as needed across the bed, essentially adding a warp to match the uneven surface, but that non-flat adjustment continues all the way up, hence the taper-off function. In this context it seems like G30 would adjust (almost) orthogonby Redemptioner - Delta Machines
QuotefrankvdhThere seems to be some assumption that rod-ends don't have any play, which is completely contrary to my experience. One of the reasons I went to mag-ball was the play in the rod-ends. Guilty as charged, I assume you would not be using a rod end with play, rather that it would go in the bin. The reason you have play in rod ends is because you are buying $1 rod ends, a set of the “famby Redemptioner - Delta Machines
Quotedc42 My effector has zero wiggle. Yes, ZERO. I find this hard to believe, and I know from plenty of experience this is not the case, as I can just walked over to your effector and haydens arms and yup, there is movement compared to rod ends, sure if you act like a pussy and put f-all force on it sure you can pretend and say no movement but I can walk over to any of the rod end machines andby Redemptioner - Delta Machines
All mag balls move under motion (or change of motion) when they are only using the magnetic force to hold the joint together and is further dependent on the amount of constraint the "cup" part of the join is providing (less cup = less constraint = more movement). The amount of movement on mag balls with a decent magnetic force is small but it is still there in all cases as the magnetic force is lby Redemptioner - Delta Machines
I think there are couple additional things to point out; - G30 is a “Quick” delta calibration method for working out the main mechanical constants for the delta mathematics, this helps you get close to a good calibration state for your delta for very little effort. It does not work “effectively” if your mechanical accuracy is not very high. - G29 does not do much for you if G30 has not worked wby Redemptioner - Delta Machines
Quotegadgetmind PrintBite is easy to fit to glass and bubbles aren't really an issue if you take care. I print PLA, PETG, ABS and TPU straight onto it and all it takes to clean it is window cleaner or a wipe with acetone. Level is important, but that's always the case. I also print in multiple materials without any adhesive on the bed, I have a couple each of the black and opaque printebite+ oby Redemptioner - General
Doesn't make any sense to use a rolling bed to move the Y axis during the printing, why not just run a proper delta for printing then just move the belt when print is done. This would reduce complexity, remove the issues of poor print quality or slow printing with large masses moving on Y axis all while reducing the wear on the bed as it is just a "large "belt" making large numbers of small movemby Redemptioner - Look what I made!
Should have no issues adding the tiny Zesty extruder, it is pretty light and compact but I have not tried it myself so my only reservation would be around it having enough torque to deal with "fast" printing or "thick" layers, even Bondtec extruders (which are simply not worth the money or the hype) suffer with a 1.2mm nozzle and over 100mm/s (which is really slow, for me anyways), they can't keeby Redemptioner - Delta Machines
Using a DC24 IR probe, admittedly I rarely use it these days with everything squared up, I pretty much just use black Printebite for the build surface on boro glass for all my prints these days so no need to auto-calibrate, only when I get a new bed material to test do I use the auto-calibration. With the printer sitting on a level/heavy/thick/steel plate and the printer tops attached to a concrby Redemptioner - Delta Machines
Like the motor, they are spun at high speed and the force is measured and marked so you can add counter weight. A complete an utter waster of time on something that is not rotating but I wanted to learn how to use the machine.by Redemptioner - Delta Machines
Quoteshadowphile Ummm, isn't RMS always lower than the peak values? Yes, but you only need one slightly higher point to create a pretty big deviation in RMS QuoteHow do you use more than 3 points to adjust a stiff plate? My bed is a 1/4" MIC-6 cut with a waterjet (so residual stresses should be pretty low). Right now I'm trying out using a thin plate of polycarbonate as a printing surface. Itby Redemptioner - Delta Machines
QuoteDannerD3H I am startig to suspect either the short Cabricorn or the extruder itself. I am most likely to think it has something to do with the extruder. The reason why is the isuue happens with small parts where the tube is farely straight and relaxed. Two i have a similar issue on a completely different machine which only have the Bondtech in common with this machine. ! With the short disby Redemptioner - Printing
Quotedc42 We'll have to disagree about that. It is important that the sliders don't rotate when the belt stops pulling one way and starts pulling the other way. This does not necessarily mean that with the belts disconnected, the carriages don't drop under their own weight. Yes, but if the rails move freely without a load on the bearings the "majority" of them allow for some movement, this is beby Redemptioner - Delta Machines
QuotescndctrWhat's more, mine uses linear rails and not wheels, but I don't know if the rails are really significantly better. Generally using linear rails on a delta it does not, assuming you are using polycarb wheels, improve the print quality. This is due to being unable to adjust pre-load on the linear bearings, something that is a critical element to be able to adjust in order to get perfeby Redemptioner - Delta Machines
Quotehercek QuoteRedemptioner Sounds like your next upgrade will be a floating extruder That may have bad impact on maximum acceleration because he uses magnetic joints. Not by much if he does it right, in fact it may improve it depending on the mad balls used due to adding additional pre-load onto the joints, the improved control over retractions and the added ability to print flexible materiaby Redemptioner - Delta Machines
Sounds like your next upgrade will be a floating extruder You can also try improving the cooling on the heatsink, this is normally the issue with E3D rubbish clogging.by Redemptioner - Delta Machines
RMS, but as you can imagine the peak is very low, admittedly the 8mm thick 400mm round tooling plate with 7 manual height adjustment points and a 4mm borosilicate plate on top goes a long way to achieving this. I also have to disclose I have laser squared the printers and put on adjustable feet, then sit them on individual 20mm thick steel plates that are also on adjustable feet and have been levby Redemptioner - Delta Machines
Just for reference, my 350mm bed deltas running 32 point S6 340mm diameter calibration are generally under 0.01 deviation across the board, admittedly a lot of time has been spent on them to get them as mechanically perfect/aligned as possible. Try manually calibrating your printer by adjusting bed heights manually as well as mechanically adjust endstops so carriages are same height from top oby Redemptioner - Delta Machines
Quotedc42 That's a very common pattern - a crinkled-crisp like appearance, with ridges at one end of the X axis turning into valleys at the other end. It's caused by backlash in the mechanics, and it appears that way because the effector moves in opposite X directions on alternate rows while bed probing. To fix it: - Make sure the carriages move freely. With the effector and belts disconnected,by Redemptioner - Delta Machines