Quantcast
Channel: Reprap Forum - Delta Machines
Viewing all 20260 articles
Browse latest View live

Re: Delta Calibration Nightmare!

$
0
0
What is your nozzle width?

If you are printing with anything larger than 0.3mm, you are well within the error bounds of extrusion.

Re: Fan duct for kossel mini

$
0
0
I never intended to suggest yours didn't, I was referring to the design I and Olaf posted :) I like your separate fan feature, but the fact remain, that I would prefer more build height by lowering the mounting points.

Re: Delta Calibration Nightmare!

$
0
0
Are you sure your bed is not inclined ? Repeat the paper test at each tower and consider very carefully if you can solve it by putting a washer under the bed to get it more leveled.

Otherwise, different values at towers are indications of build inaccuracy and not rod length or printer radius issues.

These inaccuracies can be:

Tower leaning
Tower angles not sharp 120.
Differences in your rod length ( aka not all the same length)

And many others.

I recently became aware of this calibration method:
[www.thingiverse.com]

I think it could be good for you to do.

Re: Fan duct for kossel mini

$
0
0
No pun taken (and given), I must have misread your remarks.

In the meantime, I have ordered some squirrel cage fans (4020 size, 24V) and when time permits I will start working on a design that will incorporate both these fans and a top mounted hotend as well

Let us see what we can come up with!
:)-D

Re: Delta Calibration Nightmare!

$
0
0
This is the easy way to do delta printer calibration:

[www.youtube.com].

Once you have your Z probe working, 6-factor auto calibration takes just 30 seconds if your parameters are close to being correct, and less than 2 minutes even if they are a long way off. Unlike the heuristic delta calibration that some other firmwares support, it uses a mathematical model of a delta printer to adjust all 6 parameters so as to minimize the RMS error at the bed probe points. It can also do 3, 4 or 7-factor calibration, but 6 is usually best.

I implemented this algorithm in RepRapFirmware for the 32-bit Duet electronics board (along with segmentation-free delta movement), because that is what I use. 8-bit electronics barely has the processing power to run a delta printer. I published the code 5 months ago, but AFAIK nobody has ported the algorithm to any other 3D printer firmware. So it isn't yet available in Marlin, Repetier, Smoothieware etc.

Re: Ebay SINTRON Kossel Mini full kit

Re: Idea: A RepRap Hanging From the Ceiling

$
0
0
@Ezrec: I don't know anyone who have made a hanging RepRap, even without a gyroscope, but it's definitely a good idea!

It moves now. Lines tight and all (for a little while before it crashes into the floor). Check it out: Vimeo.

Re: Current Auto bed level firmware branch?

$
0
0
The ethernet but no wifi thing felt weird to me as well, but its a good thing to have.

The learning curve was indeed a bit steep for the .6 but I assume that .85 will be better. It was mainly the external flash software.

Re: Delta Calibration Nightmare!

$
0
0
Andy,

I lost count of the number of those 3-spiked wheels I've printed. I even changed the model to only print one layer of spoke, and measured the towers "in situ" to make printing it and calibration quicker! One thing that helped a bit was to measure the inside (50 mm) instead of the outside (60mm), as well as calibrating the extrusion rate to get the same width of plastic as the slicer expects. Calibrating the steps per mm of my stepper motors also helped. Despite that I still couldn't get consistent results.

Like you I was running around in circles trying things and getting nowhere.


Eventually I made up two braces, and tightened them up so that the vertical towers were at exactly 90 degrees to the frame. This made a massive difference, and I'm happy with the calibration now.

[attachment 62448 IMG_4487.jpeg]
Frame brace visible in upper right of shot

Re: Folger Tech Kossel Delta 2020 Full 3D Printer Kit w/Auto-Level

$
0
0
Made the octoprint mod. Works good. Its a little simplistic but overall works awesome. Now gonna install the Azteeg X5 mini. These are the things I have changed from stock

-Motors
-extruder mount
-took off the probe
-added the octoprint
-added the windows tablet. It runs printrun also so I can use either or with the marlin. Planning on running the Azteeg x5 as I have heard great things about it. So far loving the modding and loving the prints its pumping out.




" class="bbcode" border="0" />

Re: Menu on PanelDue

$
0
0
Quote
lolocaledo
Hi there,


After watching DC42's video on youtube, I noted that mine hasn't the same menu.
On the DC42's PanelDue, these options exist "Autocal(ir)", "Extrude 5mm", "Go to X0 Y0 Z1" menu and etc ...
I don't have these options on mine. Is it normal ? Thank you for your help. Laurent

Thank you

Laurent

You can set up whatever commands you want there. Just create gcode files containing the commands you want to execute, and use the menu text you want to display as the filename. Then upload them using the Macros page of the web interface. Create the /macros folder on the SD card first if you don't already have it.

Re: Is this a good Kossel Mini kit?

$
0
0
Buy cheap = buy twice.
There are so many known problems with this kind of setup, you will end up with a nonfunctional printer or you´ll buy upgrades that will cost more than this kit.
1. The v-slot roller bearings are crap. They are cheap, so you can buy some extra and sort out the best.
2. these magnetic rods tend to be problematic . 1 of 10 prints may fail, due to effector/rod disconnection
3. arduino 8 bit controller is a limitation in print speed. You also miss some of the newest development in auto calibration and auto bed level.
4. the z-probe is a mechanic switch, which is a problem for auto bed leveling.
5. Last not least, the unknown quality of the printed parts

-Olaf

Re: auto level crashing into bed when done

$
0
0
Can you explain, what a G30 A command would do in marlin firmware? I can´t find any information about it, other than G30 = single bed probe.

Thx
-Olaf

Re: Ebay SINTRON Kossel Mini full kit

$
0
0
Just received mine. The packing was a bit different (there was no dedicated carton-box for electronics), but from the first look nothing was damaged.

[attachment 62459 20150917_015009_.jpg]


But my hot-end differs from pictures on 1st page.
[attachment 62460 20150917_125547_.jpg] [attachment 62461 20150917_125524_.jpg] [attachment 62462 20150917_132053_.jpg]

And I see a possible problem with my hot-end - I can't turn the heat-sink closer to the heater part (you can see big gap with free threads on pictures). It looks like the heat-sink has not enough threads inside.
Can it be used "as is", or I must make heat-sink closer to the heater?

BTW. My version of hot-end is all metal.

Carriage crashing into base

$
0
0
Hello.

I have recently gotten a Folgertech kossel 2020.
I have built it, and calibrated it, so now the nozzle is a papers width over every part of the heatbed.
Have printed a calibration cube, and the xy direction is too big.

The problem is that sometimes when i manually move x and y, one of the carriages just continues down and crashes into the base. This has wore out my rod ends, and there is now a lot more slack than there used to be :(
The problem was worse when i set the #define DELTA_DIAGONAL_ROD to 230, which is the length of my rods. I set it to the default of 216, and the problem got a lot better. It still is there though.

Re: Cherry Pi III Is Available

$
0
0
I've just finished rebuilding by effector with an inductive Z-probe and part cooling fan. I've worked out that the Z-offset between the probe triggering and then the nozzle just catching the paper is 0.14mm. Do I enter this in marlin's configuration.h as positive or negative? Is this value only used during auto-calibration?

[attachment 62471 IMG_20150917_134306.jpg] [attachment 62472 IMG_20150917_134323.jpg]

Re: Folger Tech Kossel Delta 2020 Full 3D Printer Kit w/Auto-Level

$
0
0
Quote
davidf01
I'm not sure how to do that with eeprom. I don't even know how to turn eeprom on to do that along with everything else. I was going to look into eeprom once
I finished with all the mechanical adjustments.

EEPROM is a place where variables are stored in memory that is read from at boot and possibly during runtime. When you change the config file in Marlin and compile the code in the Arduino program, the variables are stored in EEPROM when you flash the Arduino. Boot up, and the values get read. Need to change on the fly? Send an M code like:
M92 E96.25 ; Set extruder steps per mm

Now, if you reboot after sending the above M code, you loose the M setting because the EEPROM still has the old value from the compiling. M500 stores current settings in EEPROM and M501 retreives the data from EEPROM so you can verify them. All this magic is only valid if the EEPROM is enabled in the Marlin config file.

As to the extruder issues, mine was pushing about 110mm when I asked for 100, so I had to use the M92 to adjust it until I got what I asked for. 96.25 worked for me.

In your case, is sounds like your stepper gear is either loose on the shaft or maybe the V bearing is not spinning correctly. Do you hear a grinding noise? Can you push the filament into the stepper to get it to move smoother? I recently had that problem and found the V bearing had popped the shield on one side. Got it working again, but am going to replace the extruder instead of replacing the bearing, the design isn't the greatest but it does work to get you going.

Rick

Re: Folger Tech Kossel Delta 2020 Full 3D Printer Kit w/Auto-Level

$
0
0
Thats a really nice clean looking build. I dont suppose you could link the spool holder and printed bed plate mount. I'm always in the market for something better.

Re: Folger Tech Kossel Delta 2020 Full 3D Printer Kit w/Auto-Level

$
0
0
Quote
Seriouspete
Thats a really nice clean looking build. I dont suppose you could link the spool holder and printed bed plate mount. I'm always in the market for something better.

I printed this Spool holder with these extension arms. It works great and I think looks cool. The bearing is awesome and glides rather smooth.

Bed plate mounts I printed these in version 2

Re: Ebay SINTRON Kossel Mini full kit

$
0
0
Quote
squall
Miamicraft posted the links on page 2 of this thread.

Here's the PDF:

https://www.dropbox.com/s/2w56ruepec5hgxo/Kossel mini instrution by sintron technology_v2.pdf
password : Sintron_Technology

I had to buy a dremel and dremel some of the parts myself as well to get them to fit nicely.
Thanks. I guess i overlooked those.
i held everything together and the carriages and huge ball ends will never fit. other than that i think its mostly fine. The effector seems to fit nicely. I dont think that will require a dremel attack.
Now i just have to find myself a good mallet to beat those extrusions into the corner pieces, and start building!
Viewing all 20260 articles
Browse latest View live




Latest Images