Welcome to the SeeMeCNC Community

- You got it with the nozzle coating! Both the nozzle and thermal isolator are coated with Tungsten Disulphide (WS2), which is a big improvement. I consider this to be a novelty for 3d printer technology since nobody has done it yet. 1) No friction, no stick . Plastics don't stick to WS2 so the hot...

The top plates are physically bigger than the bottom plates, for certain, by about a few mm. The perimeter outline of them, that is. The tower channels line up precisely. (on the revision of the laser cut templates circa Sept 25 2014) There is a noticeable amount of slack in the u-joint positions o...

Anyone want to guess why the nozzles aren't shiny brass? Because they're either coated with something (to prevent crud from sticking?), or they're not regular old brass. Could they be bronze perhaps? They look yellowish in the threaded area, so I'm thinking they're not stainless, unless your $7 pho...

That would be dandy for designing an enclosure (for strictly personal, non-commercial-heated-chamber purposes). I thought I read somewhere that Stratasys's patent around a heated build chamber only specifically claimed it on Cartesian robots, leaving us delta / SCARA type folks free to heat to our ...

I have heard that he has restarted development somewhat, although I have yet to see any substantial gains in this area to speak of. For now I would not go for the pro version and just go for the free version. Until regular updates begin to start again. Unless you need multiple extruder support, tha...

I had problems with the smoothie crimp connectors also. The locking ones are much better, and they need to slide completely over the pins instead of just touching on one side. If you get a smoothieboard, you really need to get some better crimps and connectors. The ones from polulu are good. Yeah, ...

Keep in mind that FDM printed things are food safe, ONCE. Bacteria can lurk in the spaces between the layers and once exposed to food/water/etc. it's no longer considered "food safe". If you print with enough perimeters to ensure a good wall, then finish with your method of choice (chemic...

I don't think much of the build quality of this board. After using it for a few months, the bed heat stopped working last week and now the thing is unable to read the SD card at all. I ordered a new one because of the bed heat, but it's all screw terminals. They don't even HAVE vertical connectors ...

Figures...just when I get my Smoothieboard up and running.

The ball material, magnetic material, and ball socket material are important too! Not to mention the geometries for this kind of stuff. I got one of those samples of the igus low-wearing filament intended for use in bearings. As I was working through some other issues I had swapped my own magnetic ...

Well, I'm used to Marlin. I actually find it very odd that Repetier assumes all axes are created equally... differences in belt tension could cause differences in movement... no? (My brain is struggling to compute that...) Either way, I was only suggesting to CONFRIM that the steps/mm were correct....

Another tip I would impart would be to make sure your steps/mm are set correctly for each individual tower. I'm not positive about this, but I suspect differences in their construction might lead to minuscule differences in scale which would stack up and create problems if not calibrated. Not if yo...

Jimustanguitar wrote:.0125 per microstep

I had the 16:1 conversion in there. In the firmware, once you define motor steps/revolution, steps/mm and microsteps/step, then from there on in the math, 1 "step" = 1 microstep = 0.0125mm.

I think adjusting endstop offsets in firmware causes the problems... this is precisely the variable we want to eliminate - math errors by the controller board. Firmware carriage offsets are not factored into actual motion planning. When you G28 the printer and it hits the endstops and backs off, it...

You would still have to heat the chamber to about 150 or so for boiling point. You need to get down to about -26HG or so do really do some good. To get down to -29HG ( boil water at room temperature) requires very very expensive pumps. For certain values of expensive: http://www.harborfreight.com/2...

Okay, I'm going to suggest what I remember my steps for resolving this were: 1) set the 0,0 point at your desired height (paper thickness). (snip) Thank you for the detailed description, I think you are pretty much right on. I do very much the same thing. Yes, it can be very tedious and time consum...

MrPTrog wrote:

DavidF wrote:Damn those are some good looking prints, would you mind divulging your settings and nozzle and such?

I'm at work today but I promise settings and pictures of my dry box setup tomorrow.

Also, what are you printing on? Looks like a sheet of PEI based on the yellowish tinge, but wasn't sure.

I've got one of the very last v1 printers (I bought a couple of weeks before v2 was released). Using 626's quadrant method with a digital dial indicator mounted on the effector, I was able to get the bed level to less than 0.07mm absolute deviation between the quadrants (one at +0.04, one at -0.03),...

Million encoder pulses per revolution is nice. You would need a duo based rambo or something with much more computational power to compute. Of course. In the case of our setups at work, you've got an Allen-Bradley PLC ($7K list) doing the motion planning. I don't know the list price for A-B's Kinet...

If memory serves from reading that paper a while back, the "correct" arm length to use is a function of the size of the tower triangle - there are plots in the paper showing how the errors change as a function of the tower spacing and arm length. If you keep the right proportion of arm len...

bot wrote:You mean just use a smaller build area? Why the need to replace the SeeMeCNC frame?

I'm assuming 626 wants the 11" build volume.

Other people are talking about shimming the bed. The image came from a mathematical analysis of positioning errors in delta printers. The author has since taken down the source material. He created a virtual delta printer in Mathematica and then had it raster-scan back and forth across the bed with...

The runaway issues due to failed thermistor are the same regardless of the heater type. It's actually a case where the resistors normally used have an advantage, they fail very quickly when they over heat and stop heating, that's not true of the ceramic heaters people are using, if you're really bo...

Eric wrote: I've seen the cartridges in 20/30/40/50W in 12/24V. 30 or 40W seems most common and easiest to find at good prices. I'd expect a 24V 20W to produce 10W if fed 12V, if you really have a need for that.

Actually 5W. Reducing the voltage by a factor of 2 reduces the power output by 4.

From what i read (i bought cartridges, did not find time to install them yet). Ceramic cartridges are better in every sense. Fit and heating. However they may be a little bit too good at doing what they are told. If your thermistor pops out, and your controller says more heat, then they have the po...