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new plastic for 3d printers. PCTG

GH
gene heskett
Mon, Feb 9, 2026 9:38 PM

Greetings tp all who have 3d printers;
This msg is targeted to those eho already have experience with PCTG,
which has recently been promoted as better than PETG.

If you've used it, what is the typical nozzle and bed temps needed?

How does it compare in room temp strength to PETG?  Or PC which needs
temps beyond 290C and 110C beds?

Back a little closer to on topic, I had to change the faucet on my
bathroom vanity recently so I went to the local hdwe store for some
tools. Did NOT find anything that looked usable.

Didn't find any that looked like they could actually do the job either 
So hare is a .scad file to print 3 wrenches I found made a 4 hr job 30
years ago, into a 45 minute job a couple months ago.

One fits over the teeny little oval handle of the shutoff valves under
the sink.  The cross holes are for a screwdriver for extra leverage.

1 for the hose nuts where the semi-modern hoses have rubber compression
noses so they are leak-proof at reasonable torque. Slip it over the hose
& use pump pliers to drive it.

And one for the plastic nut with 4 ears that mounts the faucet in the
sink basins holes. Print in PETG, standing up. .scad file so you who
live in metric land can adjust.

Cheers, Gene Heskett, CET.

"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
    Don't poison our oceans, interdict drugs at the src.
Greetings tp all who have 3d printers; This msg is targeted to those eho already have experience with PCTG, which has recently been promoted as better than PETG. If you've used it, what is the typical nozzle and bed temps needed? How does it compare in room temp strength to PETG?  Or PC which needs temps beyond 290C and 110C beds? Back a little closer to on topic, I had to change the faucet on my bathroom vanity recently so I went to the local hdwe store for some tools. Did NOT find anything that looked usable. Didn't find any that looked like they could actually do the job either  So hare is a .scad file to print 3 wrenches I found made a 4 hr job 30 years ago, into a 45 minute job a couple months ago. One fits over the teeny little oval handle of the shutoff valves under the sink.  The cross holes are for a screwdriver for extra leverage. 1 for the hose nuts where the semi-modern hoses have rubber compression noses so they are leak-proof at reasonable torque. Slip it over the hose & use pump pliers to drive it. And one for the plastic nut with 4 ears that mounts the faucet in the sink basins holes. Print in PETG, standing up. .scad file so you who live in metric land can adjust. Cheers, Gene Heskett, CET. -- "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 Don't poison our oceans, interdict drugs at the src.
JR
Jeff Ross
Mon, Feb 9, 2026 10:51 PM

Hi Gene,

https://americanfilament.us/collections/pctg

has a download for Bambu printers--the zip file is just json formated text.

The AF PCTG P1P.json shows:

    "nozzle_temperature_initial_layer": [
        "260"
    ],
and

    "textured_plate_temp": [
        "85"
    ],

Price isn't too bad:  $30 for a 1kg spool direct from American Filament.

I didn't see any reference to drying but the technical data shows:
Physical Properties
Specific DensityASTM D792g/cm31.27
Water AbsorptionASTM D 570%0.15
Humidity absorptionISO 62/method 4%0.17

The temps in that doc show that 260 / 85 are smack dab in the middle of
the range listed so I read that as "your mileage may vary".

Let us know how it works for you, please!

Jeff Ross

On 2/9/26 14:38, gene heskett via Discuss wrote:

Greetings tp all who have 3d printers;
This msg is targeted to those eho already have experience with PCTG,
which has recently been promoted as better than PETG.

If you've used it, what is the typical nozzle and bed temps needed?

How does it compare in room temp strength to PETG?  Or PC which needs
temps beyond 290C and 110C beds?

Back a little closer to on topic, I had to change the faucet on my
bathroom vanity recently so I went to the local hdwe store for some
tools. Did NOT find anything that looked usable.

Didn't find any that looked like they could actually do the job
either.  So hare is a .scad file to print 3 wrenches I found made a 4
hr job 30 years ago, into a 45 minute job a couple months ago.

One fits over the teeny little oval handle of the shutoff valves under
the sink.  The cross holes are for a screwdriver for extra leverage.

1 for the hose nuts where the semi-modern hoses have rubber
compression noses so they are leak-proof at reasonable torque. Slip it
over the hose & use pump pliers to drive it.

And one for the plastic nut with 4 ears that mounts the faucet in the
sink basins holes. Print in PETG, standing up. .scad file so you who
live in metric land can adjust.
Cheers, Gene Heskett, CET

"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
    Don't poison our oceans, interdict drugs at the src.

OpenSCAD mailing list
To unsubscribe send an email todiscuss-leave@lists.openscad.org

Hi Gene, https://americanfilament.us/collections/pctg has a download for Bambu printers--the zip file is just json formated text. The AF PCTG P1P.json shows:     "nozzle_temperature_initial_layer": [         "260"     ], and     "textured_plate_temp": [         "85"     ], Price isn't too bad:  $30 for a 1kg spool direct from American Filament. I didn't see any reference to drying but the technical data shows: Physical Properties Specific DensityASTM D792g/cm31.27 Water AbsorptionASTM D 570%0.15 Humidity absorptionISO 62/method 4%0.17 The temps in that doc show that 260 / 85 are smack dab in the middle of the range listed so I read that as "your mileage may vary". Let us know how it works for you, please! Jeff Ross On 2/9/26 14:38, gene heskett via Discuss wrote: > Greetings tp all who have 3d printers; > This msg is targeted to those eho already have experience with PCTG, > which has recently been promoted as better than PETG. > > If you've used it, what is the typical nozzle and bed temps needed? > > How does it compare in room temp strength to PETG?  Or PC which needs > temps beyond 290C and 110C beds? > > Back a little closer to on topic, I had to change the faucet on my > bathroom vanity recently so I went to the local hdwe store for some > tools. Did NOT find anything that looked usable. > > Didn't find any that looked like they could actually do the job > either.  So hare is a .scad file to print 3 wrenches I found made a 4 > hr job 30 years ago, into a 45 minute job a couple months ago. > > One fits over the teeny little oval handle of the shutoff valves under > the sink.  The cross holes are for a screwdriver for extra leverage. > > 1 for the hose nuts where the semi-modern hoses have rubber > compression noses so they are leak-proof at reasonable torque. Slip it > over the hose & use pump pliers to drive it. > > And one for the plastic nut with 4 ears that mounts the faucet in the > sink basins holes. Print in PETG, standing up. .scad file so you who > live in metric land can adjust. > Cheers, Gene Heskett, CET > -- > "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 > Don't poison our oceans, interdict drugs at the src. > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email todiscuss-leave@lists.openscad.org
GH
gene heskett
Tue, Feb 10, 2026 8:11 AM

On 2/9/26 17:51, Jeff Ross via Discuss wrote:

Thanks, Jeff..

has a download for Bambu printers--the zip file is just json formated
text.

The AF PCTG P1P.json shows:

    "nozzle_temperature_initial_layer": [
        "260"
    ],
and

    "textured_plate_temp": [
        "85"
    ],
I have 2 3kg spools coming tom.  This seems to be a slightly lower
temp than another reference I have for PC, aka polycarbonate.  We will
see, as I'll make another set of housing blocks for my vice screw.
Probably tomorrow if AZ delivers on time. Apparently something has
been added to lower it's plastic temp about 20C That still doesn't put
it in beginner printer temps but I now have 2 that can run at 295C and
120c beds.

What I need next is a good theoretical discussion about pressure advance
and its associated smoothing time. The default settings are leaving a
pronounced overflow at turn time for 90 degree corners.

Thank you, Jeff.

Price isn't too bad:  $30 for a 1kg spool direct from American Filament.

What I found was around $32/3kg, various colors.

I didn't see any reference to drying but the technical data shows:
Physical Properties
Specific DensityASTM D792g/cm31.27
Water AbsorptionASTM D 570%0.15
Humidity absorptionISO 62/method 4%0.17

What I've found in a 50% humidity house, was that PETG out of the dryer
has a good working life of under a week, so I feed it directly from a
55C dryer.

The temps in that doc show that 260 / 85 are smack dab in the middle
of the range listed so I read that as "your mileage may vary".

Let us know how it works for you, please!

I've already tested this sv08 MAX with PC, mad a 6 pack of a fan duct
stolen from the bottom of Prusa's early MK3S, looks great. This PCGT s/b
similar, but I''ll yell if not.

Jeff Ross

On 2/9/26 14:38, gene heskett via Discuss wrote:

Greetings tp all who have 3d printers;
This msg is targeted to those eho already have experience with PCTG,
which has recently been promoted as better than PETG.

If you've used it, what is the typical nozzle and bed temps needed?

How does it compare in room temp strength to PETG?  Or PC which needs
temps beyond 290C and 110C beds?

Back a little closer to on topic, I had to change the faucet on my
bathroom vanity recently so I went to the local hdwe store for some
tools. Did NOT find anything that looked usable.

Didn't find any that looked like they could actually do the job
either.  So hare is a .scad file to print 3 wrenches I found made a 4
hr job 30 years ago, into a 45 minute job a couple months ago.

One fits over the teeny little oval handle of the shutoff valves
under the sink.  The cross holes are for a screwdriver for extra
leverage.

1 for the hose nuts where the semi-modern hoses have rubber
compression noses so they are leak-proof at reasonable torque. Slip
it over the hose & use pump pliers to drive it.

And one for the plastic nut with 4 ears that mounts the faucet in the
sink basins holes. Print in PETG, standing up. .scad file so you who
live in metric land can adjust.
Cheers, Gene Heskett, CET

"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
Don't poison our oceans, interdict drugs at the src.


OpenSCAD mailing list
To unsubscribe send an email todiscuss-leave@lists.openscad.org


OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org

Cheers, Gene Heskett, CET.

"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
    Don't poison our oceans, interdict drugs at the src.
On 2/9/26 17:51, Jeff Ross via Discuss wrote: > Hi Gene, > > https://americanfilament.us/collections/pctg Thanks, Jeff.. > > has a download for Bambu printers--the zip file is just json formated > text. > > The AF PCTG P1P.json shows: > >     "nozzle_temperature_initial_layer": [ >         "260" >     ], > and > >     "textured_plate_temp": [ >         "85" >     ], > I have 2 3kg spools coming tom.  This seems to be a slightly lower > temp than another reference I have for PC, aka polycarbonate.  We will > see, as I'll make another set of housing blocks for my vice screw. > Probably tomorrow if AZ delivers on time. Apparently something has > been added to lower it's plastic temp about 20C That still doesn't put > it in beginner printer temps but I now have 2 that can run at 295C and > 120c beds. What I need next is a good theoretical discussion about pressure advance and its associated smoothing time. The default settings are leaving a pronounced overflow at turn time for 90 degree corners. Thank you, Jeff. > > Price isn't too bad:  $30 for a 1kg spool direct from American Filament. What I found was around $32/3kg, various colors. > > I didn't see any reference to drying but the technical data shows: > Physical Properties > Specific DensityASTM D792g/cm31.27 > Water AbsorptionASTM D 570%0.15 > Humidity absorptionISO 62/method 4%0.17 What I've found in a 50% humidity house, was that PETG out of the dryer has a good working life of under a week, so I feed it directly from a 55C dryer. > > The temps in that doc show that 260 / 85 are smack dab in the middle > of the range listed so I read that as "your mileage may vary". > > Let us know how it works for you, please! I've already tested this sv08 MAX with PC, mad a 6 pack of a fan duct stolen from the bottom of Prusa's early MK3S, looks great. This PCGT s/b similar, but I''ll yell if not. > Jeff Ross > > On 2/9/26 14:38, gene heskett via Discuss wrote: >> Greetings tp all who have 3d printers; >> This msg is targeted to those eho already have experience with PCTG, >> which has recently been promoted as better than PETG. >> >> If you've used it, what is the typical nozzle and bed temps needed? >> >> How does it compare in room temp strength to PETG?  Or PC which needs >> temps beyond 290C and 110C beds? >> >> Back a little closer to on topic, I had to change the faucet on my >> bathroom vanity recently so I went to the local hdwe store for some >> tools. Did NOT find anything that looked usable. >> >> Didn't find any that looked like they could actually do the job >> either.  So hare is a .scad file to print 3 wrenches I found made a 4 >> hr job 30 years ago, into a 45 minute job a couple months ago. >> >> One fits over the teeny little oval handle of the shutoff valves >> under the sink.  The cross holes are for a screwdriver for extra >> leverage. >> >> 1 for the hose nuts where the semi-modern hoses have rubber >> compression noses so they are leak-proof at reasonable torque. Slip >> it over the hose & use pump pliers to drive it. >> >> And one for the plastic nut with 4 ears that mounts the faucet in the >> sink basins holes. Print in PETG, standing up. .scad file so you who >> live in metric land can adjust. >> Cheers, Gene Heskett, CET >> -- >> "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 >> Don't poison our oceans, interdict drugs at the src. >> >> _______________________________________________ >> OpenSCAD mailing list >> To unsubscribe send an email todiscuss-leave@lists.openscad.org > > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org Cheers, Gene Heskett, CET. -- "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 Don't poison our oceans, interdict drugs at the src.