On 1/31/26 17:58, Stuart Stevenson wrote:
LinuxCNC guys,
I don't know how I included LinuxCNC guys in this email. It must have been
me trying to reply to an email using my Iphone. I literally hate it. It
updates as it wishes. The updates modify anything Apple wants to. I have to
be constantly relearning most everything. I feel like I am using a hatchet
with the sharp side cut off. When you cut the sharp side off a hatchet, you
end up with a hammer.
I have an automotive radiator to repair. The part is plastic. I have two
3D printers, neither enclosed. The motor was extremely overheated by
running out of coolant. Fortunately(I think 🤣), it still runs good. Shows
no sigh of damage except of the pressure ring in the filler neck is eroded
away. Using testing liquid I detect no presence of exhaust gases in the
coolant and the exhaust system looks clean.
Researching what plastic to print I chose PEEK because of the high glass
transition temperature - ~140C. I asked Richard at Wichita State Univeristy
if he could print PEEK. Richard does amazing things. He doesn't have a
printer that will print PEEK. Richards reply introduced me to Chris
Rempe(also at WSU). He has a printer that will print Ultim 1010. Ultim 1010
has a higher glass transition temperature, so I replied to ask him if he
could do it.
Somehow, I included you guys. I haven't heard from Chis Rempe, but this
project will probably become a radiator replacement as a new radiator from
RockAuto is USD85.00 up to USD125.00 plus shipping.
This car belongs to my sister-in-law. I was hoping for a quick little
'magic' repair. Heh, not likely.
Sorry Stuart, but at a 140C glass temp and 15 to 20 psi pressure
I don't think even PEEK is a long term solution. I've bought some
stuff from Rock Auto in the past. Everything fit. But I quite buying
used vehicles with fogged up headlights.
I share your views on govmnt and hell phones. I have one, but
since I've been 99% retired for 23 years now, just some occasional
consulting with our local daytime AM'er, I let the sim card expire
about 9 years ago. I miss it like a broken leg. If I ever get the urge
to make the grand tour west of the river to see my 4 boys again I
might see about a new card. But at 91, macular degeneration
is spoiling my enjoyment for driving the length of SD at WOT & 3 AM.
Take care of #1.
I love the LinuxCNC community!
Proving forever that you are "one of us". Thank you.
Regards,
Stuart
On Sat, Jan 31, 2026 at 4:11 PM Stuart Stevenson <[email protected]> wrote:
LOL! Andy,
I have that on there only to screw with government snoops. I don't expect
them to honor it. For one thing, they must have some honor to begin with
before they try to use it.
On Sat, Jan 31, 2026 at 12:54 PM Chris Albertson <
[email protected]> wrote:
Plan on a 360–450°C hot end, 120–160°C bed, and a fully enclosed,
actively heated chamber (70–150°C). But general guidelines are not
enough. It depends on the exact brand of filament and your own testing.
The best bed heater is dirt-cheap. You put direct mains AC on the
heater and control it with a contractor that is designed for water heaters
or electric home heating. Same for the enclosure heat. You need
insulation on the enclosure; plexiglass will not be enough, the ceramic
felt used on stoves works.
A cheaper solution is to re-engineer your product so that it does not
require PEEK.
OK, you can’t redesign the part? You can send it out to a commercial
printer. But then, “why PEEK?” have them print it in stainless steel.
On Jan 31, 2026, at 4:44 AM, gene heskett <[email protected]> wrote:
On 1/30/26 23:22, Stuart Stevenson wrote:
Addressee is the intended audience.1 mm
If you are not the addressee then my consent is not given for you to
read
this email furthermore it is my wish you would close this without
saving or
reading, and cease and desist from saving or opening my private
correspondence.
Thank you for honoring my wish.
---------- Forwarded message ---------
From: Stuart Stevenson<[email protected]>
Date: Fri, Jan 30, 2026 at 10:06 PM
Subject: Re: Small part
To: Sack, Richard<[email protected]>
CC: Chris Rempe<[email protected]>
Chris, are you able to consider a part from a private individual? I
have a
single small PEEK part. Ultim 1010 would be a little better. It is a
repair
part for an automotive radiator. I can supply a solid model and/or an
STL
file.
Stuart:
What sort of temps are needed for PEEK? I have what I thought was a
comprehensive chart of such, but it doesn't have a reference for PEEK.
Apparently the composer of this chart wasn't concerned with materials
needing more than 300C nozzles. Even that is getting pretty far into the
far end of heater lifetimes mortality curve. I do some PC, but even at 285C
I'm losing heaters in 100-150 hrs. That also needs a bed temp around 100C,
well beyond most under $1500 printers. The printer I've rebuilt to do that,
an Ender 5 Plus now has 72 volt closed loop stepper/servo XY motors, and a
36 volt bed supply that an get to 125C. I also have a Sovol sv08 MAX. Which
is acting like its going to be my next fav printer. Either one warms up a
15 amp breaker in the service.
Thanks
Stuart Stevenson
4638 Farmstead Ct
Bel Aire, Ks 67220-1617
316-258-0953
[email protected]
Addressee is the intended audience.
If you are not the addressee then my consent is not given for you to
read
this email furthermore it is my wish you would close this without
saving or
reading, and cease and desist from saving or opening my private
correspondence.
Thank you for honoring my wish.
On Fri, Jan 30, 2026 at 9:49 PM Stuart Stevenson<[email protected]>
wrote:
Thank you.
Addressee is the intended audience.
If you are not the addressee then my consent is not given for you to
read
this email furthermore it is my wish you would close this without
saving or
reading, and cease and desist from saving or opening my private
correspondence.
Thank you for honoring my wish.
On Fri, Jan 30, 2026 at 3:26 PM Sack, Richard<
[email protected]>
wrote:
I am unable to print PEEK.
PEEK needs a very high temperature nozzle, very hot build chamber,
etc.
Chris Rempe has fancy and very expensive 3D printers; he may be able
to
help you.
*Richard Sack *Research Support Manager & Design Engineer
Project Innovation Hub | College of Engineering
John Bardo Center 105
Wichita State University |1845 Fairmount Street Wichita, Kansas 67260
<
https://www.google.com/maps/search/1845+Fairmount+Street+Wichita,+Kansas+67260?entry=gmail&source=g
| Box 209
Schedule a meeting
<
https://outlook.office.com/bookwithme/user/[email protected]?anonymous&ep=plink
(316) 204-1341
*From:* Stuart Stevenson<[email protected]>
*Sent:* Friday, January 30, 2026 1:10 PM
*To:* Sack, Richard<[email protected]>
*Subject:* Small part
Richard,
Are you able to print PEEK?
Thanks
Stuart
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Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
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-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.
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--
Addressee is the intended audience.
If you are not the addressee then my consent is not given for you to read
this email furthermore it is my wish you would close this without saving or
reading, and cease and desist from saving or opening my private
correspondence.
Thank you for honoring my wish.
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.
_______________________________________________
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