SoliForum - 3D Printing Community — ABS layers don’t stick

Re: ABS layers don’t stick

2014-03-24T21:53:50Z

I Home the Z with the nozzle over each of the three adjustment screws on the bed separately to get level. Then with the Z still in the Home position I adjust the Z-height screw till the nozzle just touches the bed. It is a bit of back and forth to first get the bed sitting level in relation to the nozzle and ending with a final Z-height adjustment. Are you printing on glass? If not you will have a hard time getting that bed perfectly level in relation to the movement of the nozzle. With the stock extruder you may have a hard time extruding if you run your nozzle as close to the bed as I do though.

Re: ABS layers don’t stick

2014-03-24T20:43:38Z

Oh ok thanks for the EEPROM help! I will try it today.

Regarding the bed leveling and the z level: I’m not sure how much it drops. Is there a way to set my Z Home position for it to correspond with the start of the printing position? So I can level from Home and it actually being the level the bed starts the first layer off? How do you level your bed? From what position?

Re: ABS layers don’t stick

2014-03-24T20:30:45Z

With the Mac EEPROM is done directly in the Manual G-Code line

So in your case you would start by typing in M501
Then if it reports back 130 you would type something close to M92 100 to change it to 100 steps/mm
Then if it extrudes 100mm's when you asked for 100 mm's you would use M500 to make it a permanent change.

This is a quote from Adrian
"You adjust the steps-per-mm using M92
when its right, use M500 to write it to firmware
M501 will report what is currently in firmware.

you dont need to adjust the firmware directly - just need to do M92 with the right values, and M500 to write it to EEPROM.

Same thing the eeprom dialog does, just without the pretty interface"

Re: ABS layers don’t stick

2014-03-24T20:14:46Z

Ok on the Mac the process is a little different.
I'll get back to that in another post.
The first layer problem is exactly what I said so if what your saying is true set your first layer height in slic3r to lets say .3 if your then saying that your bed is homed to lets say that same .3 gap. When it starts you end up .6 away? If that's the case then why wouldn't you just adjust your Z so it is just touching your nozzle. Then when it starts it would drop .3 or what ever and start printing.

Re: ABS layers don’t stick

2014-03-24T20:01:21Z

I’m using Mac OS X, downloaded RH and Slicer right off Solidoodle website, in the info about the app it says version 0.56 (53) and Slicer 0.9.9
I connect the printer and click on EEPROM but the window is empty. Thank you for your response!

As to layer height- I’m sorry I’m confused a bit. I’m trying to calibrate the bed but my “home” position from which I try to calibrate is different from the actual print position and that’s why it’s way off all the time, the home position is actually closer to the bed but when it goes to print it drops a bit...

Re: ABS layers don’t stick

2014-03-24T14:52:28Z

As far as the EEPROM tell us a little about your system. OS, Slic3r version and RH version. EEPROM will only show up when you are connected to your printer. You really need to get that extruder calibrated before you can expect any quality results.
It is also near impossible to troubleshoot your other issues until that is done.
When it comes to first layer height enter as in the pic below.

This is then translated during slicing and placed in the highlighted line in this pic.

Your start G-Code procedure may look different than this but scroll through it and that line is in there somewhere.

Re: ABS layers don’t stick

2014-03-24T07:08:40Z

Also I have tried configuring the extruder (how much filament it pulls) and it’s pulling 131.37 instead of 100 but then I’m not sure where to go from that because when I click the EEPROM window on my RH it’s empty and when I tried to fix it by adjusting the extruder multiplayer using the formula in the tutorial (i.e. if it’s pulling 30% more offset it to 0.7) it only adjusted to 127.52 and using 0.68 got me to 122.44 instead of 100... But at this point I still don’t think that calibrating the extruder will help my issue with layers not sticking... I’m sorry if this is confusing, I’m very new to this and trying to figure it all out and so far I am failing miserably.

Also to calibrate the bed do I calibrate it from “home” setting? Because when I do it seems fine but when it goes to print it actually lowers the bed to a slightly lower level so then the bed is way off... The only way I can calibrate the bed is when I kill the job straight away and calibrate to the position the extruder was in. What am I doing wrong?

Re: ABS layers don’t stick

2014-03-24T05:24:13Z

I have a video of it if it helps... I can’t post links though but I can send them to whoever might be awesome enough to want to help me lol

Re: ABS layers don’t stick

2014-03-24T05:10:29Z

Thanks All!
How would once calibrate the extruder steps? It looks like it prints the first layers solid and then it moves down too low and the top layers stop sticking.

Thanks again!

Re: ABS layers don’t stick

2014-03-24T01:22:18Z

wardjr wrote:

Jonny wrote:
Okay so its your first day you will have some things to do, most of those will be slicer settings, I got a similiar problem that the layer height is off (too high) but only for a few layers and the rest of the print is fine but the one or two layers mess up to whole print like in the picture. Also Ive had my printer for over a year and have never had this problem before does anyone know how to fix this?
Looks to me like your having problems with more than just the first few layers. You might try setting your layer heights to .2963

I have tried that not that same number but a multiple of (not sure what you call it) step resolution, I tried .2019683. The part in the picture had that layer height.

Re: ABS layers don’t stick

2014-03-24T00:53:29Z

Jonny wrote:

Okay so its your first day you will have some things to do, most of those will be slicer settings, I got a similiar problem that the layer height is off (too high) but only for a few layers and the rest of the print is fine but the one or two layers mess up to whole print like in the picture. Also Ive had my printer for over a year and have never had this problem before does anyone know how to fix this?

Looks to me like your having problems with more than just the first few layers. You might try setting your layer heights to .2963

Re: ABS layers don’t stick

2014-03-24T00:29:05Z

Okay so its your first day you will have some things to do, most of those will be slicer settings, I got a similiar problem that the layer height is off (too high) but only for a few layers and the rest of the print is fine but the one or two layers mess up to whole print like in the picture. Also Ive had my printer for over a year and have never had this problem before does anyone know how to fix this?

Re: ABS layers don’t stick

2014-03-23T23:19:41Z

For a new user I would NOT recommend doing the advanced calibrations like anti backlash, z-wobble firmware fix, anything firmware related... I would start with the basics to get it printing and then get comfortable with it before moving to advanced things that can cause more harm if done wrong

start with setting the z-tab which is the bed height for first layer
next level the bed
next calibrate the extruder steps and flow rate, note: there are g codes for adjusting this you do not need to mess with the firmware

Re: ABS layers don’t stick

2014-03-23T20:31:02Z

Open Slic3r (click Configure from RH). It will show three tabs on the top saying:
*Print Settings
*Filament Settings
*Printer Setting

Under Print Settings will show a window on the left...click on Infill. If you want a stronger print, adjust this. I get the best between .75 to .9
If you adjust this, click the disk icon to save to whatever profile you want.

Also, go to the Filament Settings. The first screen that pops up will show "Filament Diameter".
When I got my SD2, it was set to 3mm. Since we are only able to print 1.75 without mods, this needed to change. No matter WHAT that number says, you need to use a caliper to accurately measure the filament. I am currently running 1.76-1.78, so I set mine to 1.78. You "could" enter in a number a touch hight, but accuracy is important here.

Hope this helps!

Re: ABS layers don’t stick

2014-03-23T19:59:04Z

I only had my printer one day and we were calibrating the bed all day and got the layers to stick to it but then in the process of trying to get them to stick to each other we did something and now they don’t even stick to the bed lol I was going to try and calibrate the flow rate today.

How to adjust steps per mm? And I’m not sure if we need an anti backlash fix, do we? I’m very new and so far I can’t get my printer to print one single good piece...