Hey guys, I just finished my all-aluminum printrbot. Much thanks to the Printrbot guys for such a wonderful design! I reworked things a bit to work with the different aluminum materials and machined everything on the CNC. It has turned out to be a great little printer, as fast as I will let it go and almost silent. Very happy with the build. Here is a video describing the build. Here is tby Chris the Carpenter - Look what I made!
Hey guys, sorry for the delay. I have been a bit swamped with orders --I gotta do stuff that feeds me before I get to go play with printers. Okey dokey, the delay itself was added to the actual HIGH/LOW step command. This can be found under the "Marlin" tab in some versions and under the "stepper" tab in some other versions. In either case, you can usually find what you need by doing a "find"by Chris the Carpenter - General
Hey 3D2B, "Cape Cod" does that for a lot of folks... We are the little hook sticking out of Massachusettes. More to the point, we have 2 islands just off our coast, Martha's Vinyard and Nantucket. Many people "Once knew a man from Nantucket". Martha's Vinyard is where all the politicians go on vacation. Almost every president has spent time here, we have had Mr. Obama twice now. I am sure theby Chris the Carpenter - Reprappers
Thanks Gents, it is nice to meet all of you. @Dean, I appreciate your kind words. And I agree. I am a 50/50 guy in terms of "new fangled equiptment" --I love and honor a well-honed chisel, and it is gosh-darn nice to own a CNC. Most of the time I find myself designing with cardboard and masking tape anyway. I started with a $100 flux-only 110v cheapie welder which actually did me quite well. Lby Chris the Carpenter - Reprappers
Howdy folks, I am fairly new to this forum and I realized today that it is probably bad manners that I have not yet introduced myself. Enclosed is a video just to say a friendly hello and show you guys my machine. http://www.youtube.com/watch?v=SOeaNiPyI2I&feature=youtu.be I would like to thank everyone; I have been welcomed kindly and the few questions I have had not only been answered quby Chris the Carpenter - Reprappers
Holy wow... (and chuckling away to myself) "Karen Carpenter"? --Did you just call me a girl? What, are you going to throw rocks at me on the playground? (sigh) Okey dokey, so far you have called me a "girl", and called other folks trolls and also threw out digs on people's spelling, grammar, reading ability and much, much more. --And you want to be taken seriously? I gotta tell you, I have gotby Chris the Carpenter - General
I can't believe I am jumping back into this one, but I feel its time for some good ol' boy Kansas wisdom. Alrighty, I have now seen about 4987 comments go by and the crux of all of this is jerards's desire to convince people that this this issue is indeed a problem. I have seen about 4987 comments from folks who say this is not a problem. And around and around we go. Heck, we even started anotheby Chris the Carpenter - General
I may have something for you here... First off, I appreciate this post in general, it helped me solve my problem as well. I have taken a look at the pictures attached to this post and I had an identical problem. Exactly the same little boogers in my prints (are they bogies in the UK?). I basically mirrored everything described in this post one to one, with very little improvement. In the end, aby Chris the Carpenter - Printing
Solved and solved. AND I GOT MY MARLIN BACK! Once again, I can not tell you guys how much I appreciate your help on thinking this one through. It is a real blessing to be part of so many open source communities. Sharing and helping are good things. Alrighty -- Yes, I was loosing steps. However, I was not loosing steps via the motors actually "slipping" or "skipping". Instead, it was a simple mby Chris the Carpenter - General
Interesting indeed. I will put a O-scope on the output for both Marlin and Sprinter and I will tell you my friend, exactly how long those gosh-darn pulses are. Well, I mean I will get to it... At this point, I simply have a working machine and I just want to use the darn thing! I have been doing a bunch of test prints and trying to get things dialed in, so far with fantastic success. To put itby Chris the Carpenter - General
Do you think this would be as easy as just adding say, a 1 or 2 uS delay in the code after the high/low step? The Mach3 software I use for my mill has this "elongated pulse" option standard, I wonder if I can replicate this lengthened pulse by doing the above. Don't get me wrong, I am very happy to be printing again, and I am stoked to start work on the proper build table and to start getting thby Chris the Carpenter - General
Fixed. I guess... It was firmware. I am running Sprinter now and all seems right in the world. Of course, this means I have lost my fancy-schmancy LCD and encoder wheel, but I am getting prints going straight up now. Now I have to figure out if I want to go back to Marlin and see if I can find the problem (I am thinking more now about float rounding problems) or if I want to just suck it up anby Chris the Carpenter - General
Thanks guys, I had a moment of clarity last night when I noticed that we seem to be walking exactly the same distance as we are moving up on the Z. --Z is moving up .3mm (approx) each layer and what do you know, we are also walking about .3mm on each layer. Seems to me that I have some Z "bleeding" into my X. I mean, the math would be there for that theory. Ok, for today, I am going to do theby Chris the Carpenter - General
Yup, I was afraid of that... I remember fighting through different firmwares when I was printing with my CNC. Ugg At any rate, I appreciate everyone's help on thinking this one through, I think I just have some good ol' fashoned tinkering time ahead of me. Thanks, guys.by Chris the Carpenter - General
I would agree, it would be amazing if this were an issue with slicer, pronter or marlin. However, in terms of mechanical... The issue started on the X axis (gantry axis) and slowly stepped to the "-" side each layer. When I swapped out the driver, the issue was identical (thus, not the driver). When I tried to print on a different portion of table (thus, different part of the rods and belt) theby Chris the Carpenter - General
Forget the fact that we are spending $300/kg on plastic... ...did anyone else notice the fact that this is a $10,000 machine? Ten Thousand bucks! Last I checked, that was the price of a good used car. Sorry, one more time through... ...$10,000 --Does it come with gold coins or maybe a big bag of crack?by Chris the Carpenter - General
And still some more... I just swapped my X and Y axis and I can cause exactly the same problem using the mechanics of the Y axis. It is identical whether I use the sliding table as my X or if I use the gantry as my X. So far, I have swapped/tested each driver, each stepper and mechanics of each axis. Looks like it is not mechanical. It also seems like the problem is not wiring either (a looseby Chris the Carpenter - General
More info: Well, we did a different part of the print table with the same results. Here is a video: http://www.youtube.com/watch?v=eSytf1cMvnc&feature=youtu.be I think the next thing is to swap X and Y signal wires, but not motors. I will simply swap my X and Y --The table will become X and the gantry will become Y. If I can cause the same slant, but on the Y axis, I can then eliminate meby Chris the Carpenter - General
Hey thanks, Nudel Yup, I swapped the drivers and I can replicate the same effect. Also, the affect does not move to the other axis when swapped. I will try the endstops thing as well as trying to start with a different origin. Also, @Poly --I slowed everything down to a crawl, accel to 100, and overall printing speed at 50% (via the ultipanel). I am printing very, very slow. Again, same resultsby Chris the Carpenter - General
The drivers are cool as can be. They are rated at over 3 amps and I am only drawing 1.2A or so. Beyond that, I am using NEMA 23's that are probably in the range of 150-200 oz/in --I mean, we got plenty of driver, and plenty of motor. If indeed it is lost steps --would you have any thoughts on why it is so even and better yet, how to fix it? --Heck, I would settle for simply a way to test it. I hby Chris the Carpenter - General
I just finished my new dedicated machine (I had been printing via my CNC which was incredibly slow (and hard on the machine)). I am super happy with the results, a super-solid, welded steel frame with plenty of cnc-milled Lexan parts. Some of my better work if I do say so myself. Here is a video show and tell and my first test print. http://www.youtube.com/watch?v=Bb4icBq6Ay8 Everything seems tby Chris the Carpenter - General
Hello folks, I am just starting to get good prints with my CNC and Mach3. I am using a Propeller chip as a stand alone controller for the extruder speed, temp etc. I am learning more and more as I keep doing tests and I feel I am starting to get stuff dialed in. I appreciate this forum and any advice anyone would have. Right now, I have a problem with SuperSkein. I have dug to the depths of theby Chris the Carpenter - Australia, Melbourne RUG