Empathy List Archives

GH

gene heskett

Thu, Dec 23, 2021 8:26 PM

Hi all;

Trying to get into production on another harminic drive version, and am having
2 or 3 problems.

PETG on the hanger, H2 head on a BIQU BX printer, 235C nozzle, 70C bed.

!: Excessive stringing of the inside of a tube, where it doesn't stick and
stretches across 20 degrees or so in a straight line, In largely random
locations. What can I change to alleviate that?

Even with minimal support density, I've a pocket in the bottom for a
bearing, with norlal extrusion t's. and the supports are leaving behind a very
rough face at the support to laying real stuff at the support to part
internal boundary. How or what can I do to cura to smooth that up?

Thanks for any hints.

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, 1940)
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

Hi all; Trying to get into production on another harminic drive version, and am having 2 or 3 problems. PETG on the hanger, H2 head on a BIQU BX printer, 235C nozzle, 70C bed. !: Excessive stringing of the inside of a tube, where it doesn't stick and stretches across 20 degrees or so in a straight line, In largely random locations. What can I change to alleviate that? 2. Even with minimal support density, I've a pocket in the bottom for a bearing, with norlal extrusion t's. and the supports are leaving behind a very rough face at the support to laying real stuff at the support to part internal boundary. How or what can I do to cura to smooth that up? Thanks for any hints. 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, 1940) 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>

F

fred

Thu, Dec 23, 2021 8:52 PM

If you haven't yet tried it, consider to place your filament spool in a food dehydrator for up to fifteen hours. There's a few videos and photos of before and after prints and one of the consistent aspects is substantially reduced stringing and improved surface finish.

Original message from gene heskett gheskett@shentel.net

PETG on the hanger, H2 head on a BIQU BX printer, 235C nozzle, 70C bed.

!: Excessive stringing of the inside of a tube, where it doesn't stick and
stretches across 20 degrees or so in a straight line, In largely random
locations. What can I change to alleviate that?

end of original message (constructively edited, of course)

If you haven't yet tried it, consider to place your filament spool in a food dehydrator for up to fifteen hours. There's a few videos and photos of before and after prints and one of the consistent aspects is substantially reduced stringing and improved surface finish. Original message from gene heskett <gheskett@shentel.net> PETG on the hanger, H2 head on a BIQU BX printer, 235C nozzle, 70C bed. !: Excessive stringing of the inside of a tube, where it doesn't stick and stretches across 20 degrees or so in a straight line, In largely random locations. What can I change to alleviate that? end of original message (constructively edited, of course)

RW

Raymond West

Thu, Dec 23, 2021 10:04 PM

In Cura, top rh corner - market place - community plugins- parts for
calibration. Get a new reel of pet, run the temperature tower, then
retraction towers then other tests that you may want. Under 'travel',
learn how those settings work, retraction, combing, etc. Community
plugins have detailed settings guide, that will also help with setting
up support roof, etc. Do a web search, plenty of suggestion wrt printing
petg, etc., but they will give you a starting point. Your printer's
temperature will not be accurate, your filament will be different, you
need to tune it all in. If you can't do that you will be wasting your
time and filament.

Best wishes,

Ray

On 23/12/2021 20:26, gene heskett wrote:

Hi all;

Trying to get into production on another harminic drive version, and am having
2 or 3 problems.

PETG on the hanger, H2 head on a BIQU BX printer, 235C nozzle, 70C bed.

!: Excessive stringing of the inside of a tube, where it doesn't stick and
stretches across 20 degrees or so in a straight line, In largely random
locations. What can I change to alleviate that?

Even with minimal support density, I've a pocket in the bottom for a
bearing, with norlal extrusion t's. and the supports are leaving behind a very
rough face at the support to laying real stuff at the support to part
internal boundary. How or what can I do to cura to smooth that up?

Thanks for any hints.

Cheers, Gene Heskett.

In Cura, top rh corner - market place - community plugins- parts for calibration. Get a new reel of pet, run the temperature tower, then retraction towers then other tests that you may want. Under 'travel', learn how those settings work, retraction, combing, etc. Community plugins have detailed settings guide, that will also help with setting up support roof, etc. Do a web search, plenty of suggestion wrt printing petg, etc., but they will give you a starting point. Your printer's temperature will not be accurate, your filament will be different, you need to tune it all in. If you can't do that you will be wasting your time and filament. Best wishes, Ray On 23/12/2021 20:26, gene heskett wrote: > Hi all; > > Trying to get into production on another harminic drive version, and am having > 2 or 3 problems. > > PETG on the hanger, H2 head on a BIQU BX printer, 235C nozzle, 70C bed. > > !: Excessive stringing of the inside of a tube, where it doesn't stick and > stretches across 20 degrees or so in a straight line, In largely random > locations. What can I change to alleviate that? > > 2. Even with minimal support density, I've a pocket in the bottom for a > bearing, with norlal extrusion t's. and the supports are leaving behind a very > rough face at the support to laying real stuff at the support to part > internal boundary. How or what can I do to cura to smooth that up? > > Thanks for any hints. > > Cheers, Gene Heskett.

discuss@lists.openscad.org

stringing problem & related

Cheers, Gene Heskett.