Wednesday, May 22nd 2013 - 10:18 PMPrinted the top mounts and installed all the parts this weekend. Took awhile to get the alignment right, and I might do a revision of the nuts. If I tighten the two M5 screws that hold the nuts to the gantry, it seems to twist them just enough so the steppers miss steps. I can either leave them slightly loose, or I'll have to figure out a way to let them flex/self align.
The top mounts just keep the screw from whipping. The screws have top bearings, but due to an incorrect bore on one of the aluminum flex couplers, the left screw sits higher than the right, so I made this simple solution to get it running. Here's the top mounts:
Just need to recalibrate the firmware for the new steps/mm, relevel the gantry and bed, and do some test printed.
Friday, May 17th 2013 - 4:05 AMHere's the second one printed.
To speak to how well built the Hadron is, while it was printing the second mount, I left the room. I came back just as it was finishing the last 2 layers, and it had walked itself nearly off of my desk. I was amazed it hadn't fallen onto the floor, but the print was perfect!
Friday, May 17th 2013 - 3:16 AMWork in progress, ACME nut mounts for the ORDbot.
Thursday, May 16th 2013 - 1:11 AMSo if my steps/mm for my extruder is damn near perfect, why am I extruding too much plastic? I have a 0.35mm Jhead, and I followed a guide that said to set it as 0.31 in Slic3r. My issue is that on solid layers, it's extruding too much plastic, and I've had prints fail because the nozzle gets caught on the print and knocks it or the glass loose. Any tips?
Sunday, March 17th 2013 - 12:25 AMI couldnt get it working consistantly with PLA. It would be ok free air, but then I would go to print and it wouldn't flow consitantly, or simply get jammed.
I never had a problem with my previous wades and jhead, that's why I'm switching back. I might try something different for my next printer, might build a delta printer of some sort.
The qubd not working is less to me about the cost, and more the giant waste of time it's been. Waiting for it to arrive after the Kickstarter closed, then waiting for new parts to try to get it to work. If I had been using ABS it probably would have been fine, but I'm using exclusively PLA.
Saturday, March 16th 2013 - 10:45 PMnew wrench in the mix: printed a calibration cube, looked decent, changed some settings and went to print again, all of a sudden it looks like the extruder is losing steps, or something.
Turns out, the qubd motor got so hot, it MELTED THE PLA drive gear so the gear was spinning on the stepper shaft. I'll be switching it out for my old extruder motor.
I actually have a shirt that perfectly describes anything I do with qubd: http://www.thinkgeek.com/product/e5c1/
Saturday, March 16th 2013 - 3:59 AMa brief update:
The tensioner on my original wades reloaded cracked, so my Ordbot was out of commission. I received my qubd hot ends, and after spending a bunch of time and money getting different wheels, Barts tensioner thing, I gave up on them. I'm using the motors, thermistors, and cartridge heaters with my new Wades Reloaded and Jhead. If anyone wants the rest of the bits I'll let them go cheap, but I don't know how useful they would be.
I just received my Wades Reloaded from this ebay seller: http://www.ebay.ca/sch/andyh3009/m.html ... 4340.l2562
He shipped the parts from the UK for less money than some sellers wanted to ship from Washington state to BC, and his service was top notch. The quality of the Wades Reloaded is very nice, I think he printed on mylar or some sort of clear plastic, and then trims the parts out after. The plastic film is firmly attached to the prints.
I'm reassembling everything and I'll recalibrate this weekend, and hopefully (finally) get some good prints out of this machine.
Friday, August 31st 2012 - 5:37 PMwell I was obviously out to lunch doing those calcs then.
So why did I see such an improvement switching to 1/8 microstepping?
I was printing last night at 195*, 0.2mm layer height, and getting great results... until my computer froze (I think due to slic3r).
I'm really looking forward to the SD card and control panel that Royco is working on. Combine that with his new Azteeg X3 and my new qubd dual extruders, and the new Z axis ACME leadscrews, I'm hoping to get even better quality results.
Friday, August 31st 2012 - 3:44 PMso the 160 (my original setting) in Marlin is steps/mm or steps/inch?
either way, it seems to have fixed one of my major issues.
Friday, August 31st 2012 - 12:39 AMSo apparently one of my major issues was my own fault (insert facepalm).
During initial setup and testing, I set my Z axis to full step..... and then promptly forgot to change it. With M8 threaded rod and 1.8* motors, that gives me a 160 steps/inch. 25.4mm/160=0.15875mm per step. So, it seems that every few Z axis changes when printing, it would go to the closest degree it could, which was too much or not enough, and boom, failed print.
Changed it to 1/8 step (1280steps/inch) and now my resolution is 0.0198mm, more than enough. Printing now, I'm already noticing less Z "wobble". When one side went to the wrong "step", it would tweak the gantry in one direction, making the wobble worse....
But I'm still replacing the Z screws with ACME threaded rod. I ordered 2 1/2"-10, 12" long with delrin nut and bearings for $40 shipped from an eBay seller. I also ordered some new clamping couplers, so no more set screws.
Friday, August 3rd 2012 - 5:14 PMSo 5 revisions later, I have a fan duct that works. I'll post some pics later.
I've also been working on making a 3D printable 2.x-style laser (I say style because it won't be exactly the same), and these just got posted to thingiverse: http://www.thingiverse.com/thing:26752 - a 3d printable mirror holder
Saturday, July 28th 2012 - 6:15 PMprinting part 2 of the fan duct using the Voxel Factory black PLA. Compared to the Ultimachine black PLA, it seems to print nicer (?), and it comes on a spool (awesome!) for cheaper than Ultimachine (awesome!), and its from within Canada, so shipping is fast and cheap (awesome!)
I would definitely recommend buying from Voxel Factory. They have good deals on multiple spools (2 pack and 3 pack) and they have a good selection of colors. I bought black and glow in the dark blue 1.75mm PLA. It took 6 business days from ordering to the package arriving, which isn't bad at all. The deals on spool are 2 for $75 or 3 for $99, no matter what kind (ABS, PLA, 3mm, 1.75mm). http://www.voxelfactory.com/
Saturday, July 28th 2012 - 1:54 AMsome decent overhang... printing a proto fan duct
Monday, July 23rd 2012 - 7:15 PMbut then I would need to buy ABS
I actually broke a part last night when trying to remove it, it was stuck so well.
Monday, July 23rd 2012 - 4:55 PMI don't use ABS, I'm using PLA exclusively. Since using rubbing alcohol, every part has stuck, and stuck so well that when I go to pull the part off, the tape comes with it. I actually need to peel the tape off of the part.
Another tip, for those of use that don't have an adjustable lower Z endstop (I broke mine trying to tap it), using a piece of tape or 2 on the stop can help dial in the zero level.
Monday, July 23rd 2012 - 12:51 AMhaving better luck with prints sticking, seems that using a bit of rubbing alcohol to rub down the blue tape is helping it stick. I haven't hooked up my heated bed yet, I need a connector for the Azteeg bed temperature.
Saturday, July 21st 2012 - 5:36 PMI ordered some dark blue glow in the dark and black PLA from Voxel Factory in Montreal, so I'll see how that stuff prints compared to Ultimachine PLA.
Thursday, July 19th 2012 - 3:48 AMBeen awhile, went on vacation, worked too much etc etc
recalibrated and releveled my bed (a thickness gauge from an auto parts store is handy for getting it right), and after some more slic3r tweaking, I got this (0.2mm layer height, 195 degrees):
An issue for awhile now has been that it was a pain to set the Z zero, so I finally got my settings good enough to do this print:
Its based on the adjustable z endstop by dzach, printed with Ultimachine 1.75mm PLA, 0.2mm layer height, 195 degrees (model and discussion here: viewtopic.php?f=33&t=1322&p=11646&hilit=endstop#p11646). I made a slightly modified version in Solidworks It shows a few flaws that I still need to tweak, mainly my extruder (I think it's pushing more filament through than it thinks), overhangs need to be calibrated. The "tower" sections was also a bit soft, so I think a duct for my fan will help with that.
After a few minutes of cleanup:
I just need to grab my tap set and a short M4, and I'll install it. It definetaly seems that the UM PLA likes being printed at a higher temperature. Weird.
Sunday, June 24th 2012 - 9:17 PMwell that old bolt is going in the garbage.
With just the hobbed bolt changed, and no other settings changes (although I did get the latest slic3r build), and nozzle set to 0.30mm and 0.2mm layer height, this is the result:
As you can see, there is still some issues with infill, and the corners have a bit of globbing. It also looks very slightly warped. Temp was set to 180C.
Measured with calipers, printed dimensions are: 20.09 x 20.09 x ~10.10mm
Sunday, June 24th 2012 - 8:37 PMI did some more measuring, and then opened up my extruder, and the teeth on the hobbed bolt are jammed full, so its slipping. This would explain why the prints are inconsistent. I'm swapping to a nother bolt with bigger teeth (M4 tap vs M3 tap)
Sunday, June 24th 2012 - 8:09 PMI'm reprinting now and I'll check the height. The widths were both about 20.4-20.1mm so those are pretty close. I lowered the temperature to 180 and see what that does for the print.
Sunday, June 24th 2012 - 6:17 PMHere is the original on the left, and the newly printed calibration box using the settings from that link on the right. 0.30mm nozzle setting with 0.2 layer height.
Is the issue cooling? I've got a spare 40mm fan I can hook up, not sure if that would help?
Saturday, June 23rd 2012 - 6:20 PMYes, my own ineptitude. Or, I like to call it "engineering on the fly".
When I was building the Hadron, I couldn't find a proper measurement for belt length, and I cut the belt too short. I wanted to use the damn thing, so I drilled a hole in the extrusion for clearance of a button head cap screw, and mounted the idler as you see. I was waiting on my Inventables order to arrive, as I ordered 10 feet of belt. It's actually not a big deal yet, it simply limits my Y travel to around 175mm, which won't be a problem until I start trying to print larger objects.
Saturday, June 23rd 2012 - 5:16 PMI'm hoping the new settings and the Lava hot bed will help. My two biggest problems all along have been aligning the two sides of the Z axis, and setting my Z zero. Without being able to print an adjustable Z zero block, it's quite difficult to get it set just right, and it also makes leveling the bed that much harder. I'll post some pictures later, but I'm making a temporary Z zero block and a Z axis height jig to hopefully solve the problem. I'll be switching to ACME threaded rod for the Z as well in the near future.
Once the Kickstarter for QU-BD extruder is done, I'll likely be upgrading to an Azteeg X3 to get dual extruders. Link to the Kickstarter: http://www.kickstarter.com/projects/qu- ... r-dual-ext
Saturday, June 23rd 2012 - 1:02 AMAnd as it sits today after attaching the Lava hot bed:
I finally got a successful print, but it has some issues, so I would love some opinions/advise. Here is the 20mm calibration box:
This is with pretty much default Slic3r settings, and I'm using 1.75mm PLA. The box was printed onto blue tape. I think my nozzle settings are wrong though. I ordered a 0.35mm J head, and thought I recieved a 0.50mm, but when I do a free air extrusion, the diameter is around 0.48-0.51, which seems more in the range of a 0.35mm nozzle. The box about was printed with Slic3r set for a 0.5mm nozzle.
Saturday, June 23rd 2012 - 12:40 AMGot my Hadron running awhile ago, here is a picture of it somewhat fully assembled:
Saturday, June 23rd 2012 - 12:38 AMI finished building my Hadron a few days ago, now I am working my way through getting the thing moving.
Azteeg X1: Panucatt
Wades Reloaded Extruder: Thingiverse
J Head Hot End: Hotends.com
Lava Hot Bed (when it gets here): Buildlog forum
Fancy Lights: Controller and LED Strip
eBay 12V 30A Power Supply: (example link) eBay
The Azteeg X1 is fantastic, it makes everything really easy to wire up. I'm in the midst of setting up the Z axis and extruder, so far the X and Y are working well, and boy does this thing move!