QuoteLarsK If he has so high temperatures on his upper heat-break that it dries out any normal CPU paste then he has an underlying problem. Applying better and more sophisticated grease is symptom treatment. End of story. The reason for the high temperatures is, by definition, a lack of sufficient heat transfer between the heatbreak and the heatsink. This could be caused by the heatsink itself nby wfcook - Delta Machines
I haven't built a CoreXY (yet) but it is my next project and I've done a fair amount of looking into these things. Sli3DR uses a Dualwire-Gantry system, which is not quite the same thing as a CoreXY. IMO the DW-G has a couple of disadvantages relative to CoreXY: (1) It uses a much larger belt or wire, so it is more susceptible to stretching and hysteresis in the belt, (2) It does not actually elby wfcook - CoreXY Machines
QuoteLarsK Using thermal grease is symptom treatment - Not problem solving. If it worked as a quick fix then sure. But now you should try to find the root cause for your problems. Also if you have 130 degree on the upper part of the heat break you have a serious problem. No, it is problem solving, and it is even suggested as such in the E3d troubleshooting guide. Stainless steel is a lousy therby wfcook - Delta Machines
Do you have your slicer set for relative E moves? If so, that could certainly explain the slow/non-extrusion, assuming your printer uses absolute E. You can look at the G-code, and if the E arguments to the G1 commands are all numbers like 0.0134 then you need to change the slicer setting. If they are steadily increasing down a string of G1 commands, then that isn't it.by wfcook - Repetier
EDIT: I found the answer just as I gave up and posted the question. The --datadir command line option. Is it possible to make the new version of slic3r and the old version NOT use the same settings profiles?by wfcook - Slic3r
I have had good luck with N52 countersunk magnets and 10mm ball bearing. The only time the effector has popped off is if the head crashes into something.by wfcook - Delta Machines
Quotedc42 You can indeed damage drivers on the Duet by connecting or disconnecting stepper motors with power applied. Later versions of the Duet from RepRapPro (not sure about boards from Replikeo) use locking Molex connectors for the stepper motors. In my case, the problem was a bad crimp on one of the pins in a locking connector, which would go intermittently bad for a fraction of a second. Prby wfcook - Delta Machines
Has anybody thought of putting an second extruder with a small, low-torque stepper motor on the carriage in series with the main extruder? The idea would be that the second motor is there to take up the slack but not have so much weight moving around, and the primary extruder with the bigger motor would have enough torque to make sure the smaller motor didn't get overpowered. It could be used toby wfcook - Delta Machines
I've noticed a couple of things about rafts that are worth pointing out and which I think could be changed relatively easily: (1) The first two layers of the raft are printed at the same pattern angle, which results in the first layer (thicker extrusion) not properly supporting the second layer (thinner). (2) The first interface layer is printed at the same pattern angle as the first raft angleby wfcook - Slic3r
Glad that helped - it sure solved MY problems. I think you'll find you don't want it on the brass nozzle itself, as it tends to dry out at the higher temperatures (unless you can get some Red Ice 611HTC to try, which I have been unable to source anywhere). The critical thing is the UPPER (not lower) heat break threadsby wfcook - Delta Machines
Last question...will it support CoreXY ?by wfcook - Delta Machines
Thank you, that is very helpful.by wfcook - Delta Machines
Quotedc42 Quotewfcook Quotedc42 I wouldn't use 3mm filament with a Bowden system. A Bowden tube for 1.75mm filament imparts quite a lof ot sideways force to the hot end, which used to cause the head angle to vary on my Ormerod printer. With 3mm filament, this force will be around 5 times higher, because I expect the sideways force to increase with the cube of the tube diameter. What causes a sidby wfcook - Delta Machines
It sounds like it's not up to temperature, so I would double-check the thermistor and firmware settings. Typically you should be able to easily push the PLA through the e3d by hand. Also, add some high-temperature thermal grease to the upper threads on the heatbreak (not the lower ones). This will dramatically improve cooling and help prevent clogs.by wfcook - Delta Machines
Quotedc42 I wouldn't use 3mm filament with a Bowden system. A Bowden tube for 1.75mm filament imparts quite a lof ot sideways force to the hot end, which used to cause the head angle to vary on my Ormerod printer. With 3mm filament, this force will be around 5 times higher, because I expect the sideways force to increase with the cube of the tube diameter. What causes a side force on the hotendby wfcook - Delta Machines
dc42: I have been using RADDS but I am very seriously looking at Duet for my next project. I have a few of questions: (1) Is there some summary page where I can read the specific enhancements that ReprapFirmware has to take advantage of the 32-bit architecture and which Repetier has not implemented? Is there a good comparison page? I like the large community that Repetier has (Marlin, too), andby wfcook - Delta Machines
Your firmware probably has a feature that shuts off the heated bed if the temperature isn't climbing fast enough. You might fiddle with those numbers. Having said that, the Onyx bed can be difficult to get up to temperature. I occasionally speed it up by putting a towel or other insulator over it during the heating process...it can usually maintain temperature once it's gotten up there.by wfcook - Delta Machines
Quotethevisad Quotematthew900 Thanks! I figured my blow torch method was a bit heavy handed. I was pissed and it made me feel better. What's the best solvent for PLA? On the plus side removing the thermistor and heater from the hot end helped me learn something useful. I added thermal paste to both when I reassembled it and discovered my hot end heated up way faster and I think the thermistor isby wfcook - Delta Machines
I am happy with these: 16 x ∅10 M4 Threaded Ball Rod Ends for Kossel Mini 3D Printer Magnetic Jointsby wfcook - Delta Machines