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I'd say that if you have the ability to fix the models yourself, I'd do it. CAD seems to be one of those things that completely escapes me. If you can correct it now and get things printed properly the first time instead of trying to shim and force it to work, you'll be better in the long run. Gluing it might also add some unforseen permanance that will be twice as hard to correct later. Its
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mydogjustice
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General
A little more testing this morning. I dont need to send the off command to the heated bed for the PSU to shutoff. The second the thermistor says the bed is at temp and starts dialing back power, the whole PSU craps out. So if I set bed temp to 60, it will run until bed temp returns 60 and then shut off. If I set it to 110, it will run the whole way up to 110, but still shut off when it reache
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mydogjustice
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RAMPS Electronics
I've got two different 100K glass bead thermistors, 1 on the hot end and 1 under the bed. While I was chasing down another problem, I found that the resistance on the two therms were different, although neither had been on for a few hours. Is this something I should be accounting for in the tables? If yes, please god show me how and where.
Things are hot right now, but I'll check difference
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mydogjustice
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General
OK, so I self resolved the other topic, but I'm not getting anywhere with this one and I'm a bit stumped. If I have the heated bed running and shut it off through the Pronterface console, its shutting down the entire PSU. 450W PSU with 2 seperate 12V 20A rails. Should be more than enough to handle both a hot end and a heated bed. 9/10 times shutting the bed to 0 will kill the whole box. It a
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mydogjustice
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RAMPS Electronics
And we have a winner! Had a bad connection on the thermistor. Reterminated and its burnin!
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mydogjustice
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RAMPS Electronics
May have posted a bit too early. Found I'm not getting any resistance on the thermistor. Gotta check connections, but that would be a problem right? I think there is something in both Marlin and Sprinter that disable bed below 5 and right now its checking in at 0. Should have been my first clue.
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mydogjustice
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RAMPS Electronics
I've been printing for a few weeks now and all has been smooth. Today I got around to changing my setup and installing the hotbed, but its no workin.
I'm working with RAMPS 1.4 and Marlin, although I went back and retested with Sprinter with no luck either. PSU should be big enough. 450W with two seperate 12V rails pushing 20A each. I've got 12V at the incoming terminals on both. If I turn
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mydogjustice
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RAMPS Electronics
I know that there are a hundred different "flavors" out there and you didnt really mention anyhting specific about your new build (congrats), but a good place for me when I started a month ago was the BOM on the wiki Wiki The list is for 8mm build, but I was able to swap out for 5/16 easily where applicable.
If you really want to waste a bunch of time, you should be able to source everything
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mydogjustice
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General
How loose is loose? There should be some oversizing but still close enough to act as a wrench and hold the nut captive. Trying to print things directly to size can be a hassle because it leaves no room for shrinkage or "artifacts" that occur during the printing process and also bolt machining tolerances. M8 hardware should be 12.73 - 13.0 mm across the flats (someone correct me if I'm grossly
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mydogjustice
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General
I'm up plenty early this morning. I'll take Hexagon for a whirl. I have yet to find anything I can seem to manage, especially a free one. Account confirmation came straight through and was in my Inbox before I could switch windows. Check you spam folder?
JW
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mydogjustice
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General
Well. I figured out where the hole was. I just decided to give it a print. Got a small hole in the shell and it skipped some of the infill in that area as well. At some point the layers picked up and I managed to get through the print. And then it looks like I missed a step or two in the Y axis, so it shifted maybe a mill. Oh, and then I think I printed the wrong model for my hot end.
I
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mydogjustice
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Slic3r
I'm trying to print extruder. (groove mount) I've done the gears no problem and I'm slicing at the recommended .25 layer height with a .35 nozzle. I dont want to waste the time and filament to find out there really is a problem. I know plenty of people are printing it without any problems, I just cant firgure out what I'm missing? Or do I just say screw it and print it?
Thanks!
JW
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mydogjustice
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Slic3r
How big is the power supply? Is it an old PSU hack mod? If so, do you have a dummy load on the 5v rail?
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mydogjustice
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General Mendel Topics
So I was rooting through GCode that I was printing with and it would appear that the biggest contributing factor was I somewhere along the line decided to start slicing things with a 180mm/s travel speed. My little guy cant move that quick that fast so it was skipping steps on the axis. Just so happened that most of the really long travel moves were in the Y axis.
Final answer: Slowed down
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mydogjustice
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Printing
nb99 Wrote:
-------------------------------------------------------
I have yet to put grub screws into the pulley. Although I should. I had to gently tap the pulley on with a hammer when I assembled, so I dont think the pulley is slipping. Although I've added a sharpie mark across the end to see if indexing changes.
> - pulley occasionally slipping on stepper shaft.
>
> I event
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mydogjustice
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Printing
What do your first layer parameters look like vs the upper layers? It looks like your first couple layers are a little better (althought kinda hard to tell from the pics) and these are typically printed slower than the upper layers. I know in Slic3r, there is a setting that indicates bottom layer speed @ (30%) of normal layer speeds. And then solid infill would dictate the next couple layers.
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mydogjustice
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Printing
Need a nudge in the right direction to figure this out. The last few prints I've started are begining well, but either after a few layers, the next layer is about 10mm off. Or sometimes within the same print it changes. I first thought it was something wierd going on with the slicing of the models, but I doubt it at this point. After getting the same results from a few different prints, I'm t
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mydogjustice
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Printing
I just switched from Sprinter to Marlin this morning and while I have everything configured the same, I'm also running into a problem with cold extrusion, except mine happens mid print. Right now, first three layers print at 190 (PLA), and then dips to 180, but I also have my fan set to kick on at the third layer. Instantly the hot end starts dipping (obviously) and it does a lot of start and s
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mydogjustice
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Firmware - experimental, borrowed, and future
Just a little update to keep the information flowing. I decided to go the easy route first and try just to spray it, rather than disassemble the whole thing. Couple shots of WD40 on the threads really seemed to clear things up for my situation.
If you have the luxury of chasing the threads now with a die, I'd go a head and do it! Ounce of prevention...
Also triple check to make sure that
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mydogjustice
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General Mendel Topics
I've got a curious problem with my Z screws as well. Maybe its the same problem and I just didnt notice it until I've started calibrating. My Z motors will turn down and as they near the endstop, one of them just stops. Of course it has to be the one on which the switch is mounted. So I end up with Z2 still turning the carriage down and almost running it right off of the threads while Z1 just
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mydogjustice
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General Mendel Topics
MikeMike - We could probably smell each other's burning plastic! I'm in East York as well. Pretty new to the printing community, but I've got a month into my Prusa build and I have most of the mechanics worked out. Just getting started on firmware and calibrations. I'm maybe another month from actually getting anything printing?
I'd be really intereseted in meeting up with anyone else in
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mydogjustice
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Pennsylvania RepRap User Group
I'm really not inclined to disclose a company name until I would be positive that they were directly responsible for a loss of card security. At the very least its very disparaging and at its worst is libel. Even if the vendor had nothing to do with it and it turned out to be something of my own fault or another previous transaction, a single thread that calls into question the integrity and se
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mydogjustice
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General
I dont really want to start by naming any site names if they aren't ultimately responsible, but has anyone else had problems with any of the more popular sites that supply a lot of parts for the printers? I've only started my build a few weeks ago but have bought most all of the parts I need to make my Mendel. As a way to track cost of the project, I decided to use my American Express, which I
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mydogjustice
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General
I've been working on my first prussa for the last few weeks (I have to force myself to slow down, otherwise I rush it). I'm getting pretty close to start wiring the rig and I've got a few thoughts, but I dont know if I'm gonna smoke something in the process.
I've managed to scrounge a PSU from an old server I had laying around. 2 seperate 12V rails with 20Amps each, so I'm pretty pumped abou
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mydogjustice
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RAMPS Electronics
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