Re: Ebay SINTRON Kossel Mini full kit January 24, 2016 07:08AM |
Registered: 8 years ago Posts: 17 |
Re: Ebay SINTRON Kossel Mini full kit January 24, 2016 07:17AM |
Registered: 8 years ago Posts: 89 |
Re: Ebay SINTRON Kossel Mini full kit January 24, 2016 07:19AM |
Registered: 10 years ago Posts: 14,672 |
Re: Ebay SINTRON Kossel Mini full kit January 24, 2016 07:22AM |
Registered: 8 years ago Posts: 104 |
Quote
Levon
Is it worth connecting it directly to 12v or it's important to leave it on the RAMPS output so it can pwm the speed? How the fan behaves for you guys?
Levon
Re: Ebay SINTRON Kossel Mini full kit January 24, 2016 07:58AM |
Registered: 8 years ago Posts: 17 |
Quote
Tha_Reaper
Hotend fan should be working at all times. Of course, if you plugged in the PWM control, you need to give the manual command to turn it in pronterface, or in your gcode when printing (M106 S255). you will be better off connecting the hotend fan directly to the PSU, and use the pwm controlled output to use with an object fan later when you want one.
in my experience, having to turn the fan on everytime you start a print will work for some time, but eventually you will forget once, and melt your effector or cause a jam.
Quote
GrAndAG
Quote
Levon
Is it worth connecting it directly to 12v or it's important to leave it on the RAMPS output so it can pwm the speed? How the fan behaves for you guys?
Levon
Hi Levon. Welcome to our community.
This question, actually, was answered a couple of times in this thread, but I can repeat. It's better if hot-end fan is directly connected to 12V (i.e. to PSU) and constantly operates all the time. Just save PWM controlled D9 terminal for object fan, which is highly recommended if you will print with PLA.
Re: Ebay SINTRON Kossel Mini full kit January 24, 2016 08:53AM |
Registered: 8 years ago Posts: 255 |
Quote
chris81
Hi,
my carbon rods and traxxas ends arrived in the meantime. I can now print bigger parts without any binding. There is one huge problem that bothers me: The dimensions in the x-direction of my printer are too small. I just printed the duet case and it is 3mm too short in the x-direction ( the board won't fit into it )
Y-direction and Z are all good or very good.
I rotated the model in slic3r 90 deg and confirmed that now the other side of the case is too short.
What can I do to get this right? I am using autocalibration and a level to make sure my bed and columns are 90deg. Apparently I am missing something.
Chris
Re: Ebay SINTRON Kossel Mini full kit January 25, 2016 01:58AM |
Registered: 8 years ago Posts: 5,232 |
Quote
Tha_Reaper
Both the 5A and the 11A input should be connected to the (same) PSU. If you leave the 11A input not connected and only use the 5, the hotend and bed will not heat up.
You don't need seperate connections. Just plug in the wires together with other ones, but try to balance the load. For example: 5A and fan together on output 1, 11A on another output 2.
It is safe to connect the bed to the PSU directly.
Re: Ebay SINTRON Kossel Mini full kit January 25, 2016 06:41AM |
Registered: 8 years ago Posts: 17 |
Re: Ebay SINTRON Kossel Mini full kit January 25, 2016 06:43AM |
Registered: 8 years ago Posts: 916 |
Re: Ebay SINTRON Kossel Mini full kit January 25, 2016 06:47AM |
Registered: 8 years ago Posts: 89 |
Re: Ebay SINTRON Kossel Mini full kit January 25, 2016 12:22PM |
Registered: 8 years ago Posts: 41 |
Quote
Tha_Reaper
When printing pla, outdoor painters tape works much better compared to kapton. You only need kapton for the high temperatures that ABS require of the bed
Re: Ebay SINTRON Kossel Mini full kit January 25, 2016 04:50PM |
Registered: 8 years ago Posts: 319 |
Congrats on getting your Sintron running. That is a very nice first print.Quote
Levon
Hi again guys, voila, I'm so happy, really did not expect that it will start printing straight away and so pretty not too bad very happy. By the way the filament supplied by Sintron did not stick to the bear alluminium bed without slight heating (60C degrees). I discarded the first piece of plastic mess. Other than that it's the very first 3d printed object! Will buy some Kapton tape tomorrow and try with cold bed.
The bottom layer is a bit melted out to the side, but that's because something happened in the extruder, after a second it started feeding the filament properly.
Need to add some heatsink to the MOSFET though
HAPPY!
Re: Ebay SINTRON Kossel Mini full kit January 25, 2016 07:37PM |
Registered: 8 years ago Posts: 17 |
Re: Ebay SINTRON Kossel Mini full kit January 25, 2016 09:12PM |
Registered: 8 years ago Posts: 197 |
Quote
Levon
Not sure if there is colour difference
Re: Ebay SINTRON Kossel Mini full kit January 26, 2016 09:42AM |
Registered: 8 years ago Posts: 319 |
Quote
Levon
Thank you very much guys! Yesterday I followed your recommendation and attached the masking tape I had at home, but it's not blue, it's bege, like on the picture. Not sure if there is colour difference in properties, like temperature endurance. It seems my tape took one print okay, I printed endstop upgrade, but some thin plastic threads stayed on the tape.
And I think I have on my zero level hotend closer to the bed on one side and it lifts to the other side, I'll read through and fix that without Z probe. Seems that's very usual thing for everybody.
Re: Ebay SINTRON Kossel Mini full kit January 26, 2016 12:32PM |
Registered: 8 years ago Posts: 41 |
Quote
xile6
And yes if your lifting on one tower and grinding into the bed at another. Then your calibration is off.
I spend a lot of time trying to use auto and calcs. But in the end manual calibration and test prints work.
Re: Ebay SINTRON Kossel Mini full kit January 26, 2016 01:47PM |
Registered: 8 years ago Posts: 197 |
Quote
gkr
Hello xile6,
Quote
xile6
And yes if your lifting on one tower and grinding into the bed at another. Then your calibration is off.
I spend a lot of time trying to use auto and calcs. But in the end manual calibration and test prints work.
Can you please share further details how you did the manual calibration?
Thanks.
Re: Ebay SINTRON Kossel Mini full kit January 26, 2016 06:00PM |
Registered: 8 years ago Posts: 17 |
Re: Ebay SINTRON Kossel Mini full kit January 26, 2016 06:52PM |
Registered: 8 years ago Posts: 197 |
Quote
Levon
Hi all,
Did a little bit of more leveling, seems have relatively flat coordinates. Did test print of this thing. Did not expect to have so many bridging threads in between the towers. On one hand I realize that there is a pressure in the PTE tube made by the extruder motor and it's not possible to cut it out quickly, but on the other I haven't seen that kind of hairy mess on others' examples... Is it normal on my print or I need to do better calibration of the extruder motor?
Actually I did not expect my printer will handle that big bridge of the object, but surprisingly it did the job perfectly!
Another question, how do you guys handle it when one batch of filament is finishing on the half way of your print, do you manually feed the new filament during the print so it pushes the old one and then goes into the hotend or there is more civilized method? I did it manually and had horrible filament feeding until new one made it to the hotend and huge gap with no filament at all in the base of the object so it's in very bad shape.
And last question. Is that only me who looks spellbound how printer prints all the way from the beginning to the end?
Would appreciate any observations if you see any other defects on the pictures that I don't see and can fix!
Thanks!
Re: Ebay SINTRON Kossel Mini full kit January 26, 2016 07:20PM |
Registered: 8 years ago Posts: 17 |
Quote
xile6
What speed did you print this at?
Temp and filament type?
Yep thanks, I'll re-calibrate the extruder and will think on adding the object fan!Quote
xile6
The stringing is a bit to much. The extrude needs to be calibrated and your retraction speed probably up.
Its way to thick. Most stringing is thin like hair.
You need a good part cooler fan to do bridges if printing in pla. Other then that the bridging is ok.
Thanks for the tips!Quote
xile6
When you need to replace filament you need to print and move it out the way of the print.
Normally print, lift Z5 and move X10, then you pull out the filament.
Put the new one in and make sure you push it through so it comes out the nozzle.
Then move it back into place and resume.
You can youtube "changing filament while printing."
Some people do this to get a multicolor print.
Re: Ebay SINTRON Kossel Mini full kit January 26, 2016 09:01PM |
Registered: 8 years ago Posts: 197 |
Re: Ebay SINTRON Kossel Mini full kit January 26, 2016 09:38PM |
Registered: 8 years ago Posts: 17 |
Quote
xile6
@Levon
If you still have the filament, burn it.
Re: Ebay SINTRON Kossel Mini full kit January 26, 2016 10:33PM |
Registered: 8 years ago Posts: 197 |
Yea i normally do 195 for pla and 230 to 240 for abs on both my kossel and prusa printersQuote
Levon
Quote
xile6
@Levon
If you still have the filament, burn it.
Good idea, I'll collect leftovers and will try that out.
For PLA you recon 200 degrees 30mm/s is okay?
I ordered 1kg spool of PLA filament on ebay, still on its way, they say it's for 200-250 degrees so I decided to go with 200 for the Sintron one as well...
Anonymous User
Re: Ebay SINTRON Kossel Mini full kit January 27, 2016 03:33AM |
Quote
Levon
For PLA you recon 200 degrees 30mm/s is okay?
I ordered 1kg spool of PLA filament on ebay, still on its way, they say it's for 200-250 degrees so I decided to go with 200 for the Sintron one as well...
Re: Ebay SINTRON Kossel Mini full kit January 27, 2016 03:49AM |
Registered: 8 years ago Posts: 17 |
Quote
Sir_Death
I now have PLA which prints at 195-210°C (depending on print Speed) max. speed about 35mm/sec - absolutely no stringing...
you just have to try....
Re: Ebay SINTRON Kossel Mini full kit January 27, 2016 05:05AM |
Registered: 8 years ago Posts: 104 |
Re: Ebay SINTRON Kossel Mini full kit January 27, 2016 10:50AM |
Registered: 8 years ago Posts: 319 |
Quote
xile6
@Levon
If you still have the filament, burn it.
Take a lighter to it. If it burns and gives off a platic smell and black smoke its abs.
If it melts and kinda has no smell or smells sweet. Then its pla.
Some say do a bend test, abs bends vs breaks, but i couldnt get that to work with filament that was labled. But the burn test doesnt lie.
Re: Ebay SINTRON Kossel Mini full kit January 28, 2016 12:35PM |
Registered: 8 years ago Posts: 19 |
Re: Ebay SINTRON Kossel Mini full kit January 28, 2016 05:55PM |
Registered: 8 years ago Posts: 19 |
Re: Ebay SINTRON Kossel Mini full kit January 28, 2016 06:41PM |
Registered: 8 years ago Posts: 197 |
Quote
Noitome
Ok so it appeared to be the stepper motor that got fried. Now for the final issue since I'm really stuck here. How come I can only upload sketches to the arduino when the ramps 1.4 is not attached? From the moment it's attached it gives errors in uploading while pronterface works fine. It's a real hassle disconnecting the ramps from the arduino every time I'm trying to configure something, it also isn't very good for the pins.
I've read stuff on forums of it maybe being a bad crystal?
Is there any way I can just leave the ramps 1.4 on there since I get really frustrated by having to disconnect it from the ramps 1.4 and no one else seems to have this problem, or did I miss something?