QuoteKissslicer wants you to measure filament extruded per rev of the motor, I already have a perfectly calibrated e-step in my firmware - so this make no sense at all? You can ignore that, BFB printers still use it to calibrate, on the current released version it's used to set the maximum extrusion rate if you set it to one everything is in mm/s. One the current RC it's not used at all and the mby Polygonhell - General
You put people on a pedestal you'll be disappointed. You're not going to agree with everyone, and your not going to get along with everyone. Just because people don't agree with your ideals doesn't make them or for that matter you bad.by Polygonhell - General
Out of interest did you calibrate the flow rate after swapping to KISSlicer? I know it's flow calculation is VERY different to Slic3rs and the difference can be as high as 10-15% There is a clearance setting in the current RC but that affects all perimeters, useful for things like dovetails as long as the setting consistent for all of the parts.by Polygonhell - General
foshon Wrote: ------------------------------------------------------- > Poly: I have an original Buda, I print PLA without > a fan or issues. Yeah some people seem to, I've never managed it, mines a 1.2 I think.by Polygonhell - Printing
In marlin and for that matter repetier Jerk isn't the methematical definition differential of accelleration. Rather it's the instantaneous change of velocity, or rather the initial and final speed of a vector used in path planning. For exampleif you print a square it has to reach the jerk speed at the corners, it's more complicated for none 90degree transitions.by Polygonhell - Firmware - mainstream and related support
We're you running a fan to cools the thermal break on the Hotend? IMO you can't reliably print PLA with a buddaschnozzle or for that matter pretty much any Hotend I've used without one,by Polygonhell - Printing
Yeah I realized the 5/16 thing when I found the BOM. I'm somewhat stalled on the HBot I was building, I'll get back to it, but I need to think through a few things. I wanted an Ultimaker style machine to compare the geometry with my existing machines, and I refuse to import one. My design is based around Open beam and uses bearing plates that look almost identical to yours, i.e. I use the same ofby Polygonhell - Tantillus
I got it to stick to PVA on Glass the issue was it literally peeled the PVA layer off the glass when it warped. Same thing happened with Blue tape for me. It also sticks to Hairspray on glass which will hold it flat during the print, the issue being it warps as soon as you break the bond with the glass. Everytime I see someone successfully printing with nylon it's big single walled prints, whichby Polygonhell - Printing
I use Kisslicer for almost everything, I find it's print quality superior to Slic3r for even seemingly trivial shapes, if it fails I resort to Cura. There is a lot to like about Cura, I'd prefer to set the extrusion width manually, but the paths are probably the cleanest of the 3, Kisslicer still does a couple of things better, the way it starts and stops perimeters is cleaner and wipe is a hugeby Polygonhell - General
Print a big flat square, you only really care about the first perimeter that goes down, if it's not consistent, the bed most likely isn't level.by Polygonhell - General
I believe it's software he wrote or had written specifically for the printer, since he intends/intended to make it a commercial enterprise.by Polygonhell - General
Funnily enough I had an almost identical design penned, though my belt path is different. Having said that I do like the idea of drilling the rods and mounting direct to the steppers, and it reduces the part count which is always a good thing. Question for Sublime, where did you source your 8mm rods from the chrome plated ones I have lying around will not fit into a 608 bearing?by Polygonhell - Tantillus
Lots of people print with JHeads and have excellent results, IMO it's not particularly expensive, cheaper than many options. Lots of people bought the qu-bd on the Kickstarter, and I've heard very little positive about it. I have a Jhead V5 which I like. I have a buddaschnozzle which I like, but they are not cheap. I have a couple of SeeMeCNC Steve's hotends, which I think are OK and relatively cby Polygonhell - General
QuoteMy "ISSUE" is that today there are a bunch of commercial companies like , and a bunch more that is relying on Johann's firmware to make their machines tick. I think it's interesting that you call it Johann's firmware when all Johann did is add perhaps 200 lines of code to Marlin. Johann didn't invent the Geometry, he just demonstrated it was viable and made it popular so why should he geby Polygonhell - General
I see about 20C difference on my smaller machine using a Mk2 heated bed with the thermister in the middle. I always report what an IR thermometer reads on the surface, but I suspect reporting of bed temperatures is extremely inconsistent. FWIW I'll also have rolls of filament that adhere perfectly then change rolls and nothing will stick or it's impossible to remove, so I'm not sure how useful otby Polygonhell - Reprappers
Simba Wrote: > Having been a working product design engineer for > over 12 years now, I think people sorely > underestimate the process of design for > manufacture, outsourcing, and product quality > assurance. Yes it is easy that if you can build > one to build another - but can you execute fast, > build consistently, and not have defects in your > product lots... thoseby Polygonhell - General
It looks like you're using linear bearings on the rotating rods, they aren't designed for that and will fail very quickly. The ultimaker uses brass bushings on rhose rods for that reason and Tantillus uses PLA bushings for the same reason.by Polygonhell - Developers
I think this "From a motion drive point of view I was thinking that sequences of trapezoid speed curves should be sufficient, that is, where each motion block has a (pre-calculated) initial acceleration, maximum speed, and final deceleration (to a junction speed) with all x/yz/e movement being specified directly in steps" is short sighted, while it is sufficient for motion control of linear botby Polygonhell - Firmware - experimental, borrowed, and future
Why don't you start with what electronics you are running, and how familiar you are with configuring firmware. Did you self source or buy a kit, some kit vendors have configured firmware and it would make your life a lot easier. There are instructions hereby Polygonhell - Reprappers
I would guess that you have some sort of test firmware loaded on the electronics. All connecting with repetier is doin g is resetting the board. You need to configure then load either Marlin or Repetier firmware (not host) onto the electronics.by Polygonhell - Reprappers
It's a conventional gantry withe separate X/Y belts and the X stepper moving on the Axis. An H-Bot is defined by the static motors and distinctive H belt path.by Polygonhell - General
What's the total resistance at the board of the bed and it's wiring?by Polygonhell - Reprappers
Greg Frost Wrote: ------------------------------------------------------- > Could the skewing affect that you have mentioned > be fixed by running a second wire around the bot > that travels in the opposite direction? Just > attach the opposite wire that runs along the x > axis to the carriage and wind it on the motors the > opposite way. I think it's caused by difference in tby Polygonhell - Developers
Not necessarily a lot of people are printing sub 100 micron on ultimakers and they have moving beds. The difference is the bed doesn't move while it's printing, just between layers. The thing that would worry me about the eventorbot is quality control, if that welded frame isn't straight you'll never fix it. People print at sub 100 micron on ordinary mendels, but they have to be well assembled dby Polygonhell - Reprappers
If you're getting compile errors the odds are you are using the wrong version of the arduino tools. Some firmwares require you use version 023 or 022 and don't work with later ones. Posting the actual errors would help people diagnose the issue.by Polygonhell - General
What plastic are you printing with? What settings? Can you show a picture of the issue?by Polygonhell - General
Personally I'm just glad people share any of what they do and I'll take what they can be bothered putting out there. After all in most cases they aren't required to put anything out there. The vast majority of these designs aren't intended for people to mass produce as kits, they're work in progress designs most of which are never "released" in any 1.0 form. It takes discipline and a lot of orgby Polygonhell - General
Sublime Wrote: ------------------------------------------------------- > I would think hysteresis would be far worse on > 1.75 since the filament itself can compress. The > play in the tube seems to not effect the printing > or retraction at all. I have lots of Bowden > machines with 3mm filament and some have 3.1mm ID > tubing and others have 4mm ID tubing and it makes > zerby Polygonhell - General
Yes and no. Yes it's more rigid, but if it has the same clearance in the tube them the increase in extruder hysteresis will be larger. That supposes that similar length retracts are required for both filaments, which may not be true. Where the rigidity does matter is between the extruder and the entrance to the Bowden tube, most people run very aggressive retracts, as much as 10mm at 100mm/s on 1by Polygonhell - General