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Re: Marlin and clay paste extruder (skiping) - 11 years ago

I'm still thinking Marlin is weak on the speeds. printing food

by Dannydefe - Delta Machines

Re: Marlin and clay paste extruder (skiping) - 11 years ago

I followed the manufacturer's recommendations on setting the voltage / current for the DRV 8825. I don't believe it's the fault of the stepper motor or current , I think it's a problem with Marlin not being able to work with high segment speeds. I guess I'll go back to Repetier at least it works with these higher speeds.

by Dannydefe - Delta Machines

Marlin and clay paste extruder (skiping) - 11 years ago

Here's the problem I'm having with Marlin and a clay paste extruder . My geared stepper motor running the extruder pump seems to be giving out when I reach hi steps per mm on the feedrate and or flowrate . The main stepper motors slow down and skip , and the extruder motor skips and hums? This is with no load on the extruder stepper, and the Voltage is set correct. Here is my setting for the st

by Dannydefe - Delta Machines

Re: Marlin v1 issues MANUAL_Z_HOME_POS - 11 years ago

I solved the problem by typing in M 666 L this is the result you get 07:17:19.871 : N22 M666 L *89 07:17:19.876 : Current Delta geometry values: 07:17:19.876 : X (Endstop Adj): 0.00 07:17:19.876 : Y (Endstop Adj): 0.00 07:17:19.881 : Z (Endstop Adj): 0.00 07:17:19.881 : P (Z-Probe Offset): X0.00 Y10.00 Z-5.60 07:17:19.881 : A (Tower A Position Correction): 0.00 07:17:19.884 : B (Tower B Positi

by Dannydefe - Delta Machines

Re: Marlin v1 issues MANUAL_Z_HOME_POS - 11 years ago

I'm running MLX 6mm belt width 18 teeth. I'm running 1/32nd steps. my mistake, although I did change it in the EEPROM I never changed it in the firmware .This is what it looks like now (#define DEFAULT_AXIS_STEPS_PER_UNIT {174.1, 174.1, 174.1, 439.5}) and I believe it's set correctly because the Z movement is the correct amount.

by Dannydefe - Delta Machines

Re: Marlin v1 issues MANUAL_Z_HOME_POS - 11 years ago

@ jaguarking11 I believe the numbers are correct because when I request a movement in Z, I measure it with my calipers and it is correct. I did use this formula ( ) and it verifies I have the correct steps.

by Dannydefe - Delta Machines

Re: Marlin v1 issues MANUAL_Z_HOME_POS - 11 years ago

@ jaguarking11 I'm running MLX 6mm belt width 18 teeth. I'm running 1/32nd steps. I'm not very familiar with Marlin and I see the configuration.h page has string setting, how do I change this to pulley. @AndyCart here is the M501 info..thanks 18:22:26.352 : N222 M501 *5 18:22:26.359 : echotored settings retrieved 18:22:26.359 : echoteps per unit: 18:22:26.363 : echo: M92 X174.00 Y174.00 Z174

by Dannydefe - Delta Machines

Marlin v1 issues MANUAL_Z_HOME_POS - 11 years ago

I'm installing Marlin v1 for the first time (I've been running Repetier for a couple of years). I have two main issues, I believe I have set the ( #define MANUAL_Z_HOME_POS 286 ) correctly but when I start to print it always prints about an 35mm above the bed. Then when I run the auto bed leveling everything works except the probe does not touch the bed no matter what I do, it seems to be about

by Dannydefe - Delta Machines

Re: layer height in Slic3r to 2 .5 mm - 11 years ago

thanks @ justcurious ver 1.1.3 at is helping.

by Dannydefe - Repetier

Re: layer height in Slic3r to 2 .5 mm - 11 years ago

Thanks for the help all The nozzle size was too small in the settings. On another subject I'm printing a large clay vase and with spiral vase selected. But almost every time I try to print a vase the path seems to be jerky and skips at the same point in the print on every layer . I tried lots of different settings and many variations of vases .

by Dannydefe - Repetier

layer height in Slic3r to 2 .5 mm - 11 years ago

I tried to set my layer height in Slic3r today to 2 .5 mm,for my clay printing set up. The software would not let me change the layer to such a large dimension. Is there something I'm doing incorrectly or have I reached the maximum . Thanks for help in advance Danny

by Dannydefe - Repetier

Re: LISA Simpson - 12 years ago

@A2 No I am unable to print anything dimensionaly stable yet on Lisa. This could be my fault for not generating the G code correctly with python. When I have time I'll try to print some more test patterns and share the results.

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

Here's photos of my most recent progress. I posted a couple of other photos too. The inline arm with the large aluminum pins seems to have very little play, I'm quite pleased with this configuration.

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

@ Nicholas It's a good suggestion to try to build the entire assembly from printed components . The reason I went to the larger diameter was to get good bearing surface on the shoulder. Also my ultimate goal is not only to have a printer but to have the components strong enough to handle CNC.

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

@ Nicholas I tried to eliminate play by press fitting the aluminum tube in the shoulder and machining a land on the aluminum tube for the bearing inner race to rest against. The installation is simple, I slightly pried open the fork and pushed it over the aluminum tube until they snapped into place. The design of the arm is not for structure, it's mostly for cool factor, it actually weighs a li

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

Here is something I've been playing around with. The forked arms are contained with MR6702-ZZ (15 x 21 x 4 mm) Ball Bearing which will mate with a solid aluminum plug on either the shoulder or the hub fixtures. I'm still playing around with the configuration for the aluminum plug, I'm not sure if the first photo with shoulders step for the Bearings race might perform better than just straight al

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

Any comments on this fork design? If you look at the second photo you can see my particular design with the corner structure causes interference with the current configuration. Correct me if I'm wrong ,but this shouldn't change any of the geometry using the fork design.

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

@A2 Yes, I calibrated It, the steps per mm were exactly the same as the equation. .200*16 steps/rotation 25.4mm/rotation 200*16/25.4=125.98425196850393700787401574803 steps/mm The cube printed out relatively well as you can see from the photos, the dimensions were close although there is a small deformity as you can see in the photos. The cylinder on the other hand printed as expected , and is

by Dannydefe - Delta Machines

Re: LISA Simpson first print club - 12 years ago

Sign me up for the first print club. It took me a while to learn Python and the procedure for converting the code, But actually it's quite simple. I'll try to make a video of the whole procedure to help out others. Initially I had problems with the printer cupping similar to the deltas but I believe it was just a corrupt configuration -H file . I'm hoping after several other builds are completed

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

@A2 more info on my build posted at forum.conceptforge.org

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

I posted a video of some of the first rough moves on my build. It's just barely assembled, a lot of the components are loose. Now I have to sit down and work out the tuning and geometry measurements properly. I think the 7/16 screws are really going to do a great job, they really seem quite stiff. first moves

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

@A2 I only have the ability to do soft nickel plating . (hard nickel plating is quite toxic) I will be putting first coat of copper under the nickel, copper can be built-up as desired. I think for the initial plating we will just stick with the minimum. Remember I'm primarily looking for rust prevention. first prints

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

That's a good point but there seems to be some play in the bearings on the 3/8 screws. Do you have the specs for the bearings for the 7/16 screws, I'd like to get those ordered.

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

@ Nicholas: No problem I'll be happy to nickel plate your screws. Theoretically we could change the size of the screw by leaving them in the copper plating tank longer. Maybe I'll experimentation with the 3/8 screws I have an see the results. I think we have quite a few options on the nuts but for now I agree with you let's use the Manufactured nuts.

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

Well, I ordered the screws today 7/16 steel , after talking to Roton they informed me that stainless steel was not available. I think the solution for me is to nickel plate for protection against rust. I can do this in my shop, it's actually quite easy. I also inquired about the tap for the 7/16 -10 and they let me know that it was proprietary shape and that they were not going to sell it to

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

@nicholas.seward You're right about the STEP files, however when you open ( in Solidworks ) and do feature recognition they can be problematic sometimes.

by Dannydefe - Delta Machines

Re: LISA Simpson - 12 years ago

Nicholas, that's great timing. This morning I was just about to start printing all of the pieces for the 3/8 screw . Okay, I'm on board for the 7/16 screw, and another reason to switch is the 3/8 screws that we bought were steel and in my climate here in Florida there's already surface rust so I think I'll go for 7/16 stainless screw this time. It is a lot of money but I think in the long run it

by Dannydefe - Delta Machines

Re: hole dia not matching the .stl file info - 12 years ago

I really don't think speed is the problem, the feed is quite low and the diameter of the circle is large.

by Dannydefe - Repetier

hole dia not matching the .stl file info - 12 years ago

I'm having a little trouble with hole dia not matching the .stl file info on the print. Could I be missing a setting someplace? Before I printed this part I printed out a 100 millimeter Square pattern , the dimensions were dead on. The file was modified in solidworks and netfabb for proper dimensions prior to printing. the Dia is supposed to be just under 22 mm, but it is printing at 20. . mm

by Dannydefe - Repetier

Re: LISA Simpson - 12 years ago

I seriously doubt if these can be manufactured on a lathe without extreme experience. let's produce the first couple of prototypes and if all goes well we can purchase the tap and make a bunch of nuts.

by Dannydefe - Delta Machines