Search found 1704 matches

by 626Pilot
Thu Jul 13, 2017 6:41 pm
Forum: Duet
Topic: Impressions: Duet vs. Smoothie
Replies: 71
Views: 16974

Re: Impressions: Duet vs. Smoothie

I know about the Replicape. They would've had access to a bigger pool of developers if they had used the Pi. I think they used the BBB because of its coprocessors, which they call PRUs, but that was never necessary. The Pi has a DMA controller, and can send waveforms to stepper drivers many times fa...
by 626Pilot
Wed Jul 12, 2017 12:51 am
Forum: General Tips 'N Tricks
Topic: How-to: Dimensional Accuracy Calibration for Delta Printers
Replies: 53
Views: 8059

Re: How-to: Dimensional Accuracy Calibration for Delta Printers

After you change your arm length, do the calibration again to make sure it worked right.
by 626Pilot
Wed Jul 12, 2017 12:47 am
Forum: Duet
Topic: Impressions: Duet vs. Smoothie
Replies: 71
Views: 16974

Re: Impressions: Duet vs. Smoothie

I'll continue to use Smoothieboards because I wrote the heuristic calibration system for them, and it works better for me than Duet's firmware. It gives you a full depth map after the calibration, as well as after setting up Z-only correction (if you want to), so you know what you're really getting....
by 626Pilot
Wed Jun 21, 2017 9:24 pm
Forum: Other Machines
Topic: The Palette (Mosaic Manufacturing)
Replies: 15
Views: 963

Re: The Palette (Mosaic Manufacturing)

They are offering existing customers $100 off one of the new machines. I'd rather send the existing one back, give them $100, and have them swap in the new splicer!
by 626Pilot
Sun May 28, 2017 6:11 pm
Forum: KISSlicer
Topic: I wrote a preprocessor that adds coasting support to KS.
Replies: 23
Views: 1625

Re: I wrote a preprocessor that adds coasting support to KS.

Regex is one of my least favorite things in programming, second only to recursion: Powerful, but tricky.
by 626Pilot
Sat May 27, 2017 11:13 pm
Forum: KISSlicer
Topic: I wrote a preprocessor that adds coasting support to KS.
Replies: 23
Views: 1625

Re: I wrote a preprocessor that adds coasting support to KS.

Ah - so they removed a perfectly good function used by millions of lines in existing code all over the planet, because someone likes perl regex more than POSIX regex, thus creating countless thousands of support issues just like this one. I didn't use any fancy regex, just a " " for the de...
by 626Pilot
Sat May 27, 2017 11:02 pm
Forum: General Tips 'N Tricks
Topic: How-to: Dimensional Accuracy Calibration for Delta Printers
Replies: 53
Views: 8059

Re: How-to: Dimensional Accuracy Calibration for Delta Printers

I get what your saying, but understand that my glass isn't what I would call flat and seems to warp pretty good at a few spots. I don't think glass can be warped unless it was handled very roughly during production, jostled badly before it was done cooling. During production, it's in a molten state...
by 626Pilot
Mon May 22, 2017 7:50 pm
Forum: General Tips 'N Tricks
Topic: How-to: Dimensional Accuracy Calibration for Delta Printers
Replies: 53
Views: 8059

Re: How-to: Dimensional Accuracy Calibration for Delta Printers

GeckoTek won't be flatter than glass. There are tiny undulations on the surface. I got sick of how easily the plates get scratched and have taken to clamping the glass disc to the GeckoTek aluminum base, as it works very well as a heat spreader.
by 626Pilot
Thu May 18, 2017 8:43 pm
Forum: General Tips 'N Tricks
Topic: How-to: Dimensional Accuracy Calibration for Delta Printers
Replies: 53
Views: 8059

Re: How-to: Dimensional Accuracy Calibration for Delta Printers

If you're using a 0.5mm SeeMe nozzle, I recommend setting extrusion width to 0.55. You may measure that it's less than that, but that could be due to contraction from cooling. It's usually not a good idea to use any value even slightly less than the nozzle diameter. If you do, you may see weird arti...
by 626Pilot
Tue May 02, 2017 6:01 pm
Forum: The Lounge
Topic: Hectic! But nice.
Replies: 36
Views: 2025

Re: Hectic! But nice.

How are you mounting the stepper? Can we see photos of how everything is set up?
by 626Pilot
Mon May 01, 2017 5:47 pm
Forum: Smoothieboard and variants
Topic: Heuristic (AI) calibration for delta printers on Smoothie
Replies: 520
Views: 47931

Re: Heuristic (AI) calibration for delta printers on Smoothie

Hi, I know this is old, but 626pilot could you please port your code to a newer edge realease. Last year it was a major update regarding very small movement parsing and hangs which my S3D seems to generate. I run a Tevo Little Monster delta machine and the default calibration and grid does not do i...
by 626Pilot
Wed Apr 26, 2017 2:38 am
Forum: The Lounge
Topic: Hectic! But nice.
Replies: 36
Views: 2025

Re: Hectic! But nice.

They shipped one to mhackney and he said that it worked very well, and that he expected it to hold up over time.
by 626Pilot
Tue Apr 25, 2017 8:59 pm
Forum: The Lounge
Topic: Hectic! But nice.
Replies: 36
Views: 2025

Re: Hectic! But nice.

nope. still waiting, looks like they are making a lot of compromises, so we'll see. From what i read they changed to a different sls printer whose tolerances weren't as tight, but they are adding a bushing or something to get rid of the wobble. I got an email about this a week or two ago. Having de...
by 626Pilot
Mon Apr 17, 2017 6:15 pm
Forum: General Tips 'N Tricks
Topic: How-to: Dimensional Accuracy Calibration for Delta Printers
Replies: 53
Views: 8059

Re: How-to: Dimensional Accuracy Calibration for Delta Printers

Consider that a 50x50mm solid box has 122 times more XY area than one side of a single-walled 50x50mm box. I would expect to see more positional errors pile up given the increase in area. In Delta printers, there is generally more positional error between two points the further they are from each ot...
by 626Pilot
Tue Apr 11, 2017 3:29 am
Forum: The Lounge
Topic: Effects of microstepping and segmentation on print qualty
Replies: 33
Views: 1591

Re: Effects of microstepping and segmentation on print qualty

Well, this is a significant find. I always thought Moire patterns were a necessary artifact of using Delta printers, and you could only eliminate them with some crazy high-res steppers. You've really got something here.
by 626Pilot
Mon Apr 10, 2017 8:07 pm
Forum: The Lounge
Topic: Effects of microstepping and segmentation on print qualty
Replies: 33
Views: 1591

Re: Effects of microstepping and segmentation on print qualty

Setting the layer height to a multiple of the golden ratio (once you figure out how much distance a full step takes) spreads the peaks out enough that they stop being visible. Based on Bruce's last few prints, it looks like the Golden Ratio idea works pretty well. I see only straight lines, with li...
by 626Pilot
Fri Apr 07, 2017 8:38 pm
Forum: The Lounge
Topic: Effects of microstepping and segmentation on print qualty
Replies: 33
Views: 1591

Re: Effects of microstepping and segmentation on print qualty

nebbian wrote:The only difference between these two prints was that the one at the top left has had the ROSC pin on that single A4988 driver shorted to ground. All other settings were the same.

That's really eye-opening!
by 626Pilot
Thu Apr 06, 2017 10:55 pm
Forum: The Lounge
Topic: Effects of microstepping and segmentation on print qualty
Replies: 33
Views: 1591

Re: Effects of microstepping and segmentation on print qualty

The Golden Ratio idea is really cool! To reduce these artifacts, I recommend upgrading to 400-step motors (0.9 degrees/step) and upgrading to a 32-bit controller with better drivers. Smoothieboard and Duet both offer that. I've used both, and while they have different step generation algorithms, I c...
by 626Pilot
Tue Apr 04, 2017 6:19 pm
Forum: New Member introduction
Topic: New with a pile of parts
Replies: 15
Views: 739

Re: New with a pile of parts

I got an acrylic MAX v1 in December 2012, and I can confirm that the acrylic likes to split! SeeMeCNC was kind enough to send me some replacement parts when this happened. Unfortunately, even if carefully assembled, the top plate can develop cracks after awhile, and it looks like yours has already d...
by 626Pilot
Mon Apr 03, 2017 5:08 pm
Forum: The Lounge
Topic: CAD designer recommendations...
Replies: 6
Views: 380

Re: CAD designer recommendations...

With the caveat that I haven't done work for injection molding (which I assume is what she wants), show her this and let me know if she's interested. If it's just for a mock-up, I might be able to do it. If needed, I can print samples on my Form 2 in whatever resin she wants. New Effector (F360).jpg
by 626Pilot
Fri Mar 31, 2017 6:09 pm
Forum: RAMBo
Topic: 32 bit RAMBo
Replies: 11
Views: 674

Re: 32 bit RAMBo

Will this board have a dedicated header for the PanelDue, or will it be plugging in one wire here and another there? I didn't use the PanelDue for very long, but I thought it was great.
by 626Pilot
Fri Mar 31, 2017 12:20 am
Forum: Other Machines
Topic: injection mold machine
Replies: 6
Views: 464

Re: injection mold machine

Formlabs' high-temp resin is rated for 289C at 0.45MPa. I wonder how it would stand up to thousands of shots of ABS. According to this, it is recommended for injection molding, and also not recommended for injection molding!
by 626Pilot
Fri Mar 31, 2017 12:09 am
Forum: The Lounge
Topic: Effects of microstepping and segmentation on print qualty
Replies: 33
Views: 1591

Re: Effects of microstepping and segmentation on print qualty

Why did you use 0.5mm segments?
by 626Pilot
Fri Mar 31, 2017 12:05 am
Forum: RAMBo
Topic: 32 bit RAMBo
Replies: 11
Views: 674

Re: 32 bit RAMBo

What firmware?
by 626Pilot
Wed Mar 22, 2017 6:41 pm
Forum: The Lounge
Topic: LokBuild - wow - update not so wow after all.
Replies: 16
Views: 924

Re: LokBuild - wow - update not so wow after all.

SeeMeCNC's Ultralex is pretty good for PLA. GeckoTek is good for PLA, ABS, PETG, TPU, and nylon (requires different surface) - but it scratches very easily, and a new disc is ridiculously expensive. Kapton tape is cheaper. Glue on glass is very easy, and once cleaned, the glass is the best surface f...

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