Just an update on the 3D printer I developed. I updated the board to control the 3D printer to a SKR Pro 1.0, 32 bit board. Some of the problems I faced were related to the RAMPS so with this new board not issues. Also now I am using Marlin 2.0 so a lot of new features like sensorless homing which simplify the 3d Printer. I have posted some videos if anyone is interested in the ongoing progressby biskero - General
After testing with the above configuration I got some strange results. Basically I did bed leveling from the screen and the carriage moved from x,y,z 0,0,0 to x,y,z 650,50,20 even though the log says x,y,z 0,50,20 ,is like x did not move ??? I know is 650 because x moved all the way to the end of the bed. But that's it, it did not do anything else even if I set to do a BILINEAR bed leveling wiby biskero - General
Hello, trying to figure out all the variables settings for the sensorless probing. I got the nozzle to be used as a probe on my SKR Pro v1.1 with TMC 2209, but I am not clear how to set the various variables available in the Z-Probe options of Marlin 2.0.x configuration.h, I set the following: #define NOZZLE_TO_PROBE_OFFSET { 0, 0, 0 } // Certain types of probes need to stay away from edges #dby biskero - General
Hello, ok great will set it t o 0,0,0. I have it already working and as you said the sensitivity variable was tricky to find. Here is a video. Thxby biskero - General
Hello, I am configuring Marlin 2.0.x with sensorless probing which works fine. I have set Marlin 2.0.x on a SKR Pro v1.1 with TMC 2209 for a dual pellet extruder custom printer. Now for bed leveling I will consider the nozzle of E0 as the actual probe? For example I would need to change the following? #define NOZZLE_TO_PROBE_OFFSET {10,10,0} to #define NOZZLE_TO_PROBE_OFFSET {0,0,0} or thesby biskero - General
I comment on the video. one question is about the extruder block is aluminum and I imagine you have a drill bit, is that part steel? I am asking because in my project I will be using Carbon Fiber so the drill bit, the tube and the nozzle are all steel, the extruder block is only used to heat these parts thxby biskero - General
Ciao Paolo, I saw the video and looks pretty cool, seems working very well. Any more details how it was made? I am going soon to work on mine as I was on a break from my project. Please share your finding so that we all can improve our designs, I believe pellet extruder are the future.by biskero - General
wanted to share the mounted dual extruder on the printer. Will start to do calibration in the next few daysby biskero - General
Hello, just an update on the pellet extruder, I received the aluminum block updated as the design above, they look nice, next some testingby biskero - General
Ciao, just wanted to share an update on the pellet extruder. I redesign the hotend aluminum block since the previous one had some issues. Now is thinner 20mm and has clamp style lock for the stainless steel tube that goes into the block. Also reduced the nozzle M6/M7 screw height from 13mm (vulcano style) to 7mm standard nozzle screw. In addition I ordered some new stainless steel nozzle M6/M7 wby biskero - General
ciao, actually it can retract, here some discussionby biskero - General
ciao, here is the latest build for the pellet extruderby biskero - General
Ciao, I will post the progress of my 3d printer dual pellet extruder in the coming weeks, did a lot of R&D this winter for both the 3d printer and my project. In the mean time I wanted to share the progress of other pellet extruders projects from others and the most interesting one is this: Alessandroby biskero - General
Ciao, just wanted to share an update on the pellet extruders which changed a bit from the pics above. I can extrude HIPS pellets but I am having issues with carbon fiber pellets which are half the size of the HIPS and my guess is that they float instead of been pushed down. I will post some pics as soon as possible but if anyone has any suggestions please let me know. Thx.by biskero - General
Ciao, just wanted to share the latest build of the dual pellet extruderby biskero - General
Ciao, looks very interesting. How do you heat the pellet? Looks like your cartridge is at the very end of the extruder. Do you have issues with pellet not melting fast enough? Also any issues with the motors?by biskero - General
Ciao, I published a video for the first test of pellet extruderby biskero - General
Will post pictures as soon as possible, you can check the FB/Twitter page too. I found another pellet 3d printer Looks pretty cool but really expensive.by biskero - General
That's my next move as to use some type of insulator to keep heat on the block. Also tried another cartridge 30mm and could reach 218. Looks like the one I ordered from Alibaba 50mm specs are off. Will do more tests tomorrow and will update hereby biskero - General
Ciao, just wanted to update on my progress on the big printer with dual pellet extruder. The progress has been slow since I ordered various pieces at different times and it slowed the process. Also did some mistakes ! Anyway, got all the pieces and changes a bit some. The blocks are now aluminum instead of stainless steel for 2 reasons, first needed a bigger block to heat up the tube with pellby biskero - General
Ciao, btw, not sure if anyone saw this printer No details on how the pellets extruder works. Alessandroby biskero - General
Ciao, just be very clear on what you want and do the deals via Alibaba system so that you are covered 100%. PS. dealing with the reps is a real pain sometimes!!!by biskero - General
Ciao, here is a link but there are many others. Just made my order. Alessandroby biskero - General
Ciao, check the facebook page has a lot of pictures about the build of the printer. I am getting the PA6+30% CF from China manufacturer specialized on these type of compounds and it's about $10/kg for the small amount I am getting. If you get more cost less obviously. I doing prototypes so that I can evaluable both the compound and company relations! The motors on the extruder are Nema 17 at 59by biskero - General
Ciao, I have some pictures on the facebook project page. You can follow the project on Twitter too Hackebike Basically the printer is 1200x600x600mm for a print of almost 1m and at the moment will last 44hrs. I already got 25Kg HIPS pellets for the support and in the process of purchasing 25Kg of PA6+30% Carbon Fiber pellets. Getting a lot of Kg because I am sure will need to do some good testiby biskero - General
Ciao, just received all the pieces for the stainless steel pellet extruder. Waiting for other components to finish the build. Alessandroby biskero - General
Ciao, The idea of creating you own filaments is in any case pretty cool. I though about that but it complicates the system for my project. I might need to pause the printing process to have inserts inside the print. Also I might be able to speed up the printing which than will need to sync with the filament extruder. Also if for any reasons the filament breaks it will stop the print. In any casby biskero - General
Ciao, very good points. "If a pellet extruder is extruding at a high rate, can it slow down to a slower rate quickly, and go back to a higher rate quickly?" Thats a good point which is fundamental for high quality and high definition prints. Will certainly need to do a lot of testing and also tweaking in the Marlin firmware. I am going to use a wood drill bit which will "eat" more pellets so tby biskero - General
Ciao, here is a video of the one you posted. Alessandroby biskero - General
Ciao, here more videos from those guys. The results seems decent. About your point: 1 - weight, it depends on implementation, pellets holder should not be on the extruder 2 - retraction is a problem 3 - not sure what you mean, pls explain 4 - since my print job is huge, filaments are an issue, that's why want to try pellets, you fill 3 or 4kg and forget it My extruder design is 180mm height inby biskero - General