I think your 25 degrees would be worth a try - if you're using 40N*cm NEMA 17s then the steppers should have plenty of grunt to spare, ( Of course, you;ll have to watch out for overhang angles on the "downside" which may have been negligible before taking on the Pisa Profile ) As far as contact goes, well, normal bridging is by definition no contact at all. What I have found is that the "levelby nb99 - General
Ah - DeuxVis - I think my last post was being saved as your first one went up - I will PM you..by nb99 - New Zealand RepRap User Group
Thanks - I'll check the local pneumatologists.. Interestingly - there seem to be very few references on the main reprap pages - Mcmasters, but they are about double the price of the one ebay hit for 1/4", Yorkshire Pneumatic (ha!) services, at 7 gbp per metre. (plus 8 more post). So at worst that's probably a go... (looking at trying a North90 stainless steel tube hot-end)by nb99 - New Zealand RepRap User Group
Having trouble finding anywhere that stocks 1/4" or 6mm PTFE tubing - suitable for Hot-end liner. Dotmar on the suppliers list don't...by nb99 - New Zealand RepRap User Group
Another low priority wish, any chance of combining the visualisation "Rotate" and "Move Viewpoint" like OpenSCAD, left mouse button for rotate, right button for pan. Seems a shame to have to keep reselecting modes while the RMB is unused. (Also - what is chosen as the "centre of rotation" - it does not appear to be the center-of-mass (maybe that should be "center-of-volume"), so for smalby nb99 - Repetier
What type of extruder? Is it skipping as in the stepper does that bounce back and forward thing when it can't complete a step, or is it that the filament stops feeding although stepper continues to run? I've had the latter when the hot-end was too hot (PTFE barrier jamming), when it's too cold (hob stripping filament), (could make a very un-PC comment here and wonder "are hot-ends female?" ) bby nb99 - Printing
I also am keen to build my own hot-end, because my Prusa project was an end in itself, I feel real good about the fact "I built it" - anything I could assemble myself I did.. But I did get a hot-end locally (From Vik O himself) in order to get going. The hot-end is obviously one of (if not *the* ) most subjective design parts of the whole thing. This one is I believe one of the very original deby nb99 - General
Great project - I'm a real fan of guided fault finding rather than stab & try. The Flickr collection is a real useful resource - which would be made even more useful if organised into related groups etc - which tends to involve an individual taking it on... Folks are amazingly good here at patiently responding to what are often repeated similar queries, and a comprehensive guide where they cby nb99 - General
>>You mean the Run job button, which becomes the pause button hehe - another "Doh" - I've obviously had too many late nights trying to get my first good Cube - eyes are glazing over and I'm missing the obvious.. But - tonight I've just finally printed my first cube that is actually cubic - yay !! ( last night it was adding a wee fan on the hot-end to stop PLA jamming, tonight I fixeby nb99 - Repetier
Doh - RTFM - right Still - one day it would be nice to have a button or menu command for ad-hoc pause.by nb99 - Repetier
>>The idea behind this is to prevent it, so at least the print can continue without problems. I was only referring to visualisation when printing to the Virtual Printer - not to the physical printer. My request for the virtual printer was so that one could graphically observe the way the filament is being laid down on each layer - to better understand how the slicer is doing some thingsby nb99 - Repetier
Now - this really is a "wish" - obviously up to you if you thinks it's worth the effort. "List of Pre-defined manual Gcode strings - accessible via a drop-down in Manual Control" I find I am using a lot of small combinations of actions. The manual control panel is real easy to use (and getting better all the time ), but sometimes you want to for example move to a particular spot, and itby nb99 - Repetier
Cool - great turn-around time Now - "Pause" & "Continue" : last night I was working on a problem with my Z posiitions - error seems to vary depending on the complexity of moves between Z-steps. (Calibration looks ok when using Manual Control Z moves ) So it would be great to be able to run a Print, and hit a Pause button at various times so I can use the calipers to measure extruder elby nb99 - Repetier
Would it be any different to the existing "Kill Job" button - have you had any complaints of people accidentally clicking that ? Kill Job still inexorably kills your job, just more slowly...by nb99 - Repetier
M112 : Emergency Stop If the hot-end is crunching into a part, the normal Stop Run may take some seconds before stopping. A stop that was detected as soon as it arrives in the comm buffer rather than when its turn came up in the queue would be good.by nb99 - Repetier
I see that "G4 Pnnn" is implemented in the firmware - but maybe I misunderstand what it does. I have done a post-processor to add a "cooldown" delay to my Gcode at the point it changes Z layer, (as AFAIK slic3r does not have "cool" ) by moving a little away from the endpoint and executing "G4 P1000" - I assumed this would give a 1 second pause. But it just goes to the park point then immeby nb99 - Repetier
Thanks for the updates When using the virtual printer, it still Disables addition filament drawing - it would be good to get full visualisation cheers nbby nb99 - Repetier
The 40 N*cm reference comes from the vitamins BOM on the Prusa page that you get to from the main reprap.org menu "Build a reprap" link. It fits with the fact that the two makes of steppers I have seen advertised here in NZ for repraps are 48 N*cm. However, I'm guessing its not an absolute limit - it's certainly worth getting other folks practical experiences as to whether the figure of 40 isby nb99 - Reprappers
I should clarify: my "horrible messes / blobs" were nothing to do with the repetier software - I improved them by addressing assorted hardware issues... (some way to go yet) As nophead points out, the remapping thing is non-trivial - thus definitely a long-term "wish" and not an urgent requirement...by nb99 - Repetier
microstepping is "turned on" by setting jumpers on your hardware stepper driver boards - Pololus or Stepsticks etc. The Driver-board/Stepper motor combination then "looks like" it needs more steps per revolution. The only effect on your firmware - Sprinter or any other, is that you must change the "steps per mm" calibration. If for example you have a 200 step per rev stepper motor, with a standby nb99 - General
More low-priority wishes - alternate the colour of each successive layer on the progressive 3D display, it can be quite hard to see where the displayed build has got to within one layer - especially when using a small notebook to drive the reprap from. I've just finally printed my first cube, and during the time it was printing horrible messes because of extruder height/temperature/gearing prby nb99 - Repetier
I can open the blog fine in Firefox and Chrome, but MS IE (8) does actually appear to lock-up at about the point it has loaded the main part of the page and should be loading the comments. If you switch windows then come back to IE, it is blank.. so I think it's a symptom of an IE lockup rather than something actually clearing the screen... If I save the page source to a local file, and openby nb99 - General Mendel Topics
A LIST OF THINGS THAT WOULD BE "Nice To Have" - to make a great little s/w suite even better. ( Please put bug reports in a separate thread, as they tend to cause multiple messages unrelated to a wish-list ) ---------------------------------------------------------------------------------------------------------------------------------------------------------------- While working through the inby nb99 - Repetier
Simple answer - metal components. Longer answer: there is a range of complexity in the Vitamins, e.g. Electronics and stepper motors at one end, and screws, nuts and rods at the other... You can find references to people proposing some degree of "printedness" for almost all the components. Things like extruding conductive material for PCBs, various parts of a stepper motor, rack and pinioby nb99 - General
Doh - sorry, I'm not usually that thick - thanks for the quick response.. nb .by nb99 - Firmware - experimental, borrowed, and future
Hi, I'm going through the calibration of my newly built Prusa. I chose the Repetier host and firmware because it just made so much good sense to have the dynamic settings and the efficient binary comms. (and it has turned out easy to install and run - congratulations on an excellent s/w system ! ) The Manual Control / Extrude button runs the extruder for a set time, then stops - I cannot locby nb99 - Firmware - experimental, borrowed, and future
I've just built my HBP using nichrome which sounds to be the same as you were using. 13.7 ohm / metre, = 0.35 ohm / inch. Works fine setup as below, the spacing seems to give reasonably consistent temperature distribution. Laying the nichrome out within an 18cm square on the 22.5cm square bed, with 6 runs, worked out near enough the right resistance. In the layout below, the horizontby nb99 - General
re the various definitions: from the NEMA standard ICS 16 3.2.1.12.4 Rated Torque (Continuous torque, full load torque, output torque ) Torque developed at rated voltage and rated speed without exceeding the temperature rating. 3.2.1.12.3 Peak Torque Maximum torque developed by a motor under specified conditions when teh maximum allowable peak current is applied. 3.2.3.20.4 Holding Torque Peby nb99 - Reprappers
Also make sure your end-stops are correctly wired. I've just completed my prusa build, and scratched my head over why the steppers would just give a wee buzz but not go anywhere.. ( in my case, the microswitches needed to be normally-closed, going open when the end-stop hit). Unfortunately the botmill site is rather vague on details as to what is in its Axis/Sells Mendel kit.by nb99 - Reprappers