Question on Z-Offset and Start Script, Also Nozzle Adjustment.

dc42

@justinds89 said in Question on Z-Offset and Start Script, Also Nozzle Adjustment.:

Right now without the G92 command the nozzle is a hair too close.

That implies that the nozzle touches the bed before the endstop triggers - is that really the case?

justinds89

No, when the endstop triggers the nozzle is a hair under 0.1 mm away from the bed.

Basically I am looking to add something like a 0.02mm gap to the existing gap to increase distance between the nozzle to get an optimal first layer.

Right now it works, but the plastic is a bit too squished. If I could just get the bed to go down a bit further with an offset it would solve the issue.

I'm hoping all that makes sense.

dc42

If your Z=0 position leaves the nozzle nearly 0.1mm above the bed, but that is still too close to get a good first layer, then something else is wrong. Perhaps you have configured a negative tool Z offset using G10; or perhaps in your slicer settings you are telling it to over-extrude the first layer.

justinds89

@dc42

Well I'm not exactly sure how close the nozzle is to be honest. It prints great now and the first layer looks really good too. I think it is just a hair too close though and would be better if it was backed off just a bit. Really just trying to get everything as good as possible and accurate as possible.

I will try out the G92 command. I was just trying to avoid shoving a hot nozzle into my BuildTak by going the wrong direction with the offset.

I think I can test this out without having the nozzle heated up.

Phaedrux

I was able to open Cura and find where they tucked z offset. It can be found under Build plate adhesion, but it may be hidden by default. You could add your offset there, or you could use the baby stepping buttons at the start of the print.

justinds89

@phaedrux

Appreciate that! I looked around and even used the search box in the settings, but didn't see anything. I guess I just overlooked it.

I will just use that as it will probably be easier.

Thanks!

BTW - The new fan duct and the silicon sock solved my temperature drop issue and my prints are better than ever with this printer.

justinds89

@phaedrux

I'm still not seeing it under Build Plate Adhesion. I am on the latest version of Cura.

That is odd. I will have to do some research.

Phaedrux

That's awesome. Glad to hear.

Phaedrux

It's probably hidden by default. Click the little gear that appears on the right of Build Plate Adhesion when you mouse over it. That will open the settings panel. You can then find Z offset in there and put a check box next to it so it is displayed in the sidebar.

justinds89

@phaedrux

Right, I click the gear and about the only options in there to check are for skirt and brim stuff. Nothing for Z Offset that I can see. Odd that it shows on yours.

Phaedrux

@justinds89 What version of Cura are you using? I'm on the latest 3.4.1.

It's also at the end after all the raft and brim stuff.

justinds89

@phaedrux

I'm on the same version. I looked at the plugins for the fun of it and there is a Z Offset Plugin there in the toolbox. I bet that is why I don't have the option.

Phaedrux

@justinds89 Oh that's right. It was a plugin.

justinds89

@phaedrux

Yep, got it now! That's why I couldn't find it haha.

Thanks both of you for all the help. I think I am good to go now.