[What's the best distance between nozzle and bed when leveling?]

Thanks @IRobertI

Good experience.

I will keep an eye on the nozzle to avoid having a bunch of excess melted plastic on it.

[What's the best distance between nozzle and bed when leveling?]

Got it.

Thanks @IRobertI

[What's the best distance between nozzle and bed when leveling?]

Thanks @cloakfiend

I want to print the first layer perfect because I'm printing iPhone cases.

It will look terrible if the first layer is terrible.

Anyhow, I'm trying to adjust the bed on the fly now.

[What's the best distance between nozzle and bed when leveling?]

Thanks @labern

I already get my feeler gauge, trying to use it now:)

[What's the best distance between nozzle and bed when leveling?]

The gauge is used to get accurate bed leveling (especially when new to 3D printing - I don't use it much any more). That doesn't mean a slight adjustment won't still be necessary, but it's a really good starting point. I also treat each first layer thickness the same from a leveling perspective.

I use the gauge so the first layer will be exactly what you request from Cura. If you level the bed to 0.1mm while it is set to 0.1mm Z height, then you get a precise height. Again, fine adjustment may still be needed. So yes, probably +/- 50 microns or so.

It can be important for proper bed adhesion when no heated bed is present. I agree with the overthinking, but as a beginner it is one of the many things a person must get a feel for. Then it isn't complicated or difficult to adjust realtime.

 

Thanks for your explain, I harvest a lot.

[What's the best distance between nozzle and bed when leveling?]

@cloakfiend

I didn't realize this before, thanks.

[What's the best distance between nozzle and bed when leveling?]

The firmware expects a distance of 0.1mm which is what most printer paper is. If you print with the default 0.3mm first layer you have a bit of margin for error.

 

This is exactly what I want to know, thanks.

So If I want to print with 0.3mm first layer, best to adjust the distance to 0.3mm?

[What's the best distance between nozzle and bed when leveling?]

Thanks for sharing your experience, @xeno

I'm going to try that.

[What's the best distance between nozzle and bed when leveling?]

Thanks @cloakfiend

You really inspire me, I'm going to get the hang of it (adjusting the screws on the fly).

[What's the best distance between nozzle and bed when leveling?]

Thanks @xisle

I think it's difficult for me to adjust the screw when printing, hard to control by eye...

I'm going to buy a feeler gauges for better leveling.

[What's the best distance between nozzle and bed when leveling?]

I lower the bed from home position to 0.1mm using the UltiController

 

Is it possible to do this without UltiControler?

I don't know how to adjust the bed when it's printing.

Thanks.

[What's the best distance between nozzle and bed when leveling?]

@labern

So you use the same leveling no matter what resolution to print first layer?

[What's the best distance between nozzle and bed when leveling?]

@xeno

Do you mean that if I want to print first layer with 0.6mm, then I need to adjust the distance to 0.6mm; if I want to print first layer with 0.3mm, then the distance should be 0.3mm?

Thanks.

[What's the best distance between nozzle and bed when leveling?]

Hi all

What's the best distance between nozzle and bed when leveling? 0.1mm?

It (the leveling guide) just says that put a paper and twist the screw until feel a bit tight.

I'm doubting whether need to make more tight if I want to print with 0.02mm layer resolution than 0.1mm layer resolution.

Thanks.

[Is the forum dying?]

I'm really active recent days:)

[Is there any negative effect if I enlarge the internal diameter of the PTEE isolater coupler?]

@IRobertI

Thanks for your detailed description, it's likely to be happen.

Anyhow I still will try it since I already placed an order for a new PTFE (who's inner diameter is 3.5mm - 4.0mm) this morning

Thanks again.

[Is there any negative effect if I enlarge the internal diameter of the PTEE isolater coupler?]

I only plan to enlarge the internal diameter, keep the external diameter unchanged, which will make the plastic thinner, so won't jam?

In fact, I get a spool of 2.85mm filament yesterday from the sole seller (who sells 2.85mm filament ), but the quality seems not good enough, because I get jam in the PTEE isolater coupler 4 times. Each time I have to move the coupler out and clean it.

I'm sad to say this but it's truth that many things are made in China, but not sold in China, we have to buy from foreign countries.

You said that so much stuff is produced here, could you give some examples? So may be helpful for me to get 2.85mm filament.

Thank you for your help, as always.

[Is there any negative effect if I enlarge the internal diameter of the PTEE isolater coupler?]

I have some really 3.0 mm (or maybe 3.11 mm) filaments which always jam in the PTEE isolater coupler.

So I want to enlarge the internal diameter of the PTEE isolater coupler from 3.2mm to 3.5mm or even bigger.

Is there any negative effect if I do this?

For example, whether the printing accuracy will be affected?

Thanks.

[What should I do if I want to use exactly 3.0mm filament on my UM2?]

@IRobertI

That's a good idea, thank you.

[What should I do if I want to use exactly 3.0mm filament on my UM2?]

@IRobertI

Thanks for your explain.

Could you make a 688 version when free?

[What should I do if I want to use exactly 3.0mm filament on my UM2?]

@IRobertI

I have a quick question for you.

The 'Low friction UM2 spoolholder' designed by you is really fantastic.

My question is why don't you use 688-2RS ball bearing (Which is also used by feeder, I think it's more easy to obtain), but use 608/626 ?

And I will be appreciated if you can make a 688 version.

Thanks.

[What should I do if I want to use exactly 3.0mm filament on my UM2?]

Forgive me Lofrank, your original post led me to believe that you have not tried the 3mm yet.  Your last post suggests that you have used 3mm and had problems with it.    Have you tried 3mm?

 

Tried, but failed.

Maybe due to bad quality of the 3.0mm filament.

Will do more tests.

[What should I do if I want to use exactly 3.0mm filament on my UM2?]

I am using 2.85 and 3mm without problems.  Seems as though my UM2 cannot tell the difference.

 

So maybe the 3mm filament I use is not really 3mm, maybe 3.1mm ..

I will try more 3.0mm filaments in next days.

[What should I do if I want to use exactly 3.0mm filament on my UM2?]

There's zero designs ...

 

I'm going to use original robert feeder, and then try to improve it to support 3.0mm filament after familiar with it.

[What should I do if I want to use exactly 3.0mm filament on my UM2?]

Just to check. Are you sure that the filament is truly 3mm? 2.85mm is usually advertised as "3mm" if it is meant for 3d printers. If you're buying random plastic filament meant for other purposes than that's a different story.

 

Yes, I'm quite sure about this, the sellers also confirmed this.

Almost all China made FDM 3D printers are designed to use 1.75mm/3.0mm filament (as I know), so currently no one sells 2.85mm filament here.

I also confused about this...

And I'm going to print your feeder, thanks so much.