On Monday 15 June 2020 19:38:54 Chris Albertson wrote:

> I have to agree.  Adjust the nozzle hight to what is
> recommended(paper,

paper is way too high, no adhesion at all.

> not foil) then use the software to control the 
> actual height when printing. The nozzle should be about 1/4 to 1//3 of
> it'sdiameter above the bed.

The usual .4mm nozzle, and z for first layer seems to be about .22. And 
the transparency is air between the threads.  But my painted one 
actually made another thats easily 5x more accurately laid down, the 
head motion pattern is very plainly visible where previously it was 
pulling the thread loose and laying an almost random interthread 
pattern.  It still needs more push on the extruder, I'm up to 94.0/mm 
now.  It came OOTB at 92.34mm  So this is considerably better. I'll 
paint to fill up the air between threads on this one and put it on.

I ran the extruder up another half a .mm and started a half sprocket, 30 
XL teeth needing a big alu hub and flange for the other half.  Spit out 
some loose stuff that got ripped off, no adhesion. Ran each bed nut up 
one notch and restarted it. Stuck ok so it will run the rest of the 
night w/o my babysitting.  I think I need to take that gcode back to an 
editor and raise the beginning bed temp to around 70-75 for the first 
layer, along with about 215 for nozzle temp to get good adhesion.  And I 
just found that fan isn't running at 1/3rd ack the gui unless I give it 
a starter push.  10 cent fan if that much. Probably needs lubed.

> Is this a plastic bed?  Mine is bare aluminum and glue-stick works.   
> I am thinking of moving to glass.

Steel plate, plastic film cover, with a removable sheet of magnetic 
signage on top of that.  And the center is wearing smoother as I play.  
The putty knife's edge is going away so I'll need to touch it up soon on 
a wet rouge wheel, same one I use to sharpen hand plane blades, the wet 
rouge is very aggressive for a 12,000 grit stone. I also use that to 
sharpen jointer blades, a used one being my best extraction tool. Dead 
flat, lay it on the bed, let the magnet sheet grab it and it Just Works. 
Gillette leaves more whiskers than that does.

> What you want is exact repeatability and not have to fuss with things.
>
> The Ender3 is now the most common printer, I think.  People do
> reoutinly use it for all kinds of work.  Stay with defaults.  Maybe
> move 4C up ordown based on the brand of PLA.   But if you are moving
> far from what others do, something is wrong.

No one has yet relayed their extruder speed to me.  So I've no clue whats 
really RIGHT.

Thanks Chris.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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