Posts made by bricoletout

@sonderzug said in High Temperature printing:

@bricoletout Hi, unfortunately it isn't at this point, but the downloadable CAD model goes a long way in explaining the principles.

Thank you for your answer. I downloaded the CAD files.

@timothyz said in Choose a printer in the 5k-10k$ range (with duet3d ?):

@bricoletout
Just wanted to make sure you know about this printer: https://www.projectr3d.com/shop/p/daedalus

It checks all of your boxes and is ready to go!

I want one

I will have a look thank you.

@sonderzug said in High Temperature printing:

I've acutally written my master's thesis about designing and building a HT printer. In my case, HT refers to a build chamber temperature of about 160-200 °C and nozzle temperatures of 350-450 °C.

The main challenge was in fact to design a motion system that would either withstand the heat or be excluded from the heated and isolated build chamber. I chose igus drylin in a stainless version with HT capable gliding foils, as well as high pitch spindles with nuts from the same polymer (I work at igus and did my master's there, if someone wants to look at the design, do so here). In this case, the linear rails are kept in the build chamber while the spindles protrude through the isolation to the outside, where they are driven by the steppers.

Doing so allowed me to bypass the Stratasys patent which seemed to be the sensible thing at the time.
If I were to design one such printer again, I would change a few things over the last design (aside from general considerations like accessibility and manufacturability). Most notably I would consider changing to a belt-driven, maybe coreXY system that is isolated by bellows as suggested before. A design that incorporates this is shown here.

In contrast to some who commented before, I'm very much of the opinion that the higher the chamber temperature, the better. While you can certainly produce some nice parts at 70 °C (at which temperature most available belts start to go out) sneaking up to Tg of the polymer is ideal and will allow to freely print parts of any shape without problems. And while for most use cases, materials like PA and PC (natural or filled) will do the trick, if you want to process materials like Ultem or PEEK (that have not been highly altered to be suited for lesser temperatures), you need that 160-200 °C chamber temperature at least.

If it doesn't become clear from this, IMO it's not the main challenge to reach the required nozzle temps. A 60 W heater, maybe water cooling for the hotend and a berd-air system for part cooling (or pressurized air for both, which is available in most workshops) does the trick. In my setup I'm running an E3D setup with the standard heater cartridge. The standard temperature sensor cartridges are garbage in this application and have been replaced by a high quality, braided-line version.

@sonderzug Is your thesis readable somewhere ? Thank you.

@fcwilt said in Choose a printer in the 5k-10k$ range (with duet3d ?):

@bricoletout

Let us know what you end up purchasing.

Frederick

Yes I will, but it's a hard work to choose.

Loïc.

@Luke-sLaboratory said in Choose a printer in the 5k-10k$ range (with duet3d ?):

@fcwilt Oh, plenty of that, but I don't have the $ to play anti-patent troll.

Maybe someday.

sorry @bricoletout for occupying your thread.

this is a kind of occupation

@Luke-sLaboratory said in Choose a printer in the 5k-10k$ range (with duet3d ?):

I will be launching 2 printer series "soon" that will be enclosable as well as using Duet3D hardware (with the option of either RRF or klipper).
You can see the first unit of my slinger series I shipped to an early beta customer in action at 7k Acceleration here. That's a 400x400 bed moving that fast! Results - The top print was from that video!

The keys to my printer design are as follows:

1. Any hotend/extruder combo - it adds some bulk, but the gantry plates are sturdy aluminum and have a variety of holes for mounting whichever hotend you'd like. The unit shipped was a e3d Volcano, but on my personal unit I run a slice magnum with an orbiter extruder. I have a Lily pellet extruder on-order and will also be making adapters.
2. Scalable volume - Both printer series are any-sizable, they rely on common joints that just have scaled extrusion/linear rail.
3. High temp capable - The slinger specifically was designed for bolt-on panels that will enclose the volume quickly and cheaply without complex machining. Bed is capable of 140C, after that alternative options will be needed for magnets on the removable sheets
4. Nothing is proprietary about it - this will be released open-source just like my Stablebot Core design currently is. Run any slicer, firmware, filament you want.

The other printer is my stablebot Core, with the repo here: https://github.com/lukeslaboratory/Stablebot-Core
I have the parts on-hand for a single-extruder build which I will be using a slice magnum, but the same principles apply. This machine currently runs a D3 6HC with A 3HC extender, but with a single-extruder option, could run on a D3 Mini 5+ with stepper expansions.

Great work, your table moves a lot !

I need a ready to print printer, not a kit, for my company.

@dc42 said in Choose a printer in the 5k-10k$ range (with duet3d ?):

The smaller Tractus printers may fit your budget and size requirements, https://tractus3d.com/.

Thank you, I will have a look at it.

@fcwilt said in Choose a printer in the 5k-10k$ range (with duet3d ?):

@bricoletout said in Choose a printer in the 5k-10k$ range (with duet3d ?):

@Veti Yes I would go for the Voron also but it isn't ready to print. I will look at your link, thank you.

I personally would not use a voron design.

The additional issues associated with moving the XY gantry on the Z axis would be my concern.

One person reported that a computer simulation indicated that Z belt stretch was a possible problem as the center of mass of the XY gantry was constantly changing.

I see no upside to the design and a possible downside.

CoreXY designs are currently quite popular but there are also Ultimaker designs and MarkForged designs to consider.

Just my two cents.

Frederick

Thank you for your contribution. Actually the Voron is out because it isn't assembled. I will consider other option.

@Veti Yes I would go for the Voron also but it isn't ready to print. I will look at your link, thank you.

@Veti You're right. I'm building a sheet to compare all the specs...

Hi,

I'm in the 3d printing community for years as a hobbyist (I'm printing parts for RC cars).

My employer wants to buy a printer. They asked me to help them to choose a good printer between 5000$ and 10000$.

I know, as a hobbyist, that a core XY with duet3d controller, slice engineering hotend and bondtech extruder is a good choice but I don't find a "ready to print" printer with this equipment.

What we need :

• Be able to print asa, nylon, cf nylon and other good polymers (not peek or very high temp for now) so we need to reach 300°C (330-350°C would be greater for high temp nylons).
• Heated bed with 100°C minimum.
• Enclosure.
• 300x300x300mm of volume.
• Better with a non web base slicer.
• Non proprietary filaments.
• Good support

In this price range there is Ultimaker S5, Raise3D, Airwolf3d, Makerbot, Markforged...

I will study in depth this market but I'm asking for suggestions

Which printer would you choose beetween 5k and 10k$ ?

Do we know the "industrial printer" who comes with a duet3d ?

Thank you for your answers.

@dc42 said in 13 Temperatures sensors (and more) for an R&D printer:

@bricoletout said in 13 Temperatures sensors (and more) for an R&D printer:

And for the PT100 we can also use PT100 amplifier to use them on the PT1000 inputs I think.

No, for PT100 sensors you should use our PT100 daughter boards, https://www.duet3d.com/DuetAddons/PT100_DaughterBoard.

Ok thank you for the answer.

David,

Thank you for this very detailed (and fast) answer. That's awesome. The DUET3D will be our choice for sure.
We will use SSR if needed. That's not a problem. We already use SSR with 220V cartridges.
And for the PT100 we can also use PT100 amplifier to use them on the PT1000 inputs I think.

If I have any question I wil not hesitate to come back here.

Loïc.

Dear duet3D community,

I'm Loïc from France. My company is building a 3D printer to print technical polymers (PEEK for example).
We need to monitor (and record) a minimum of 13 temperatures. The most of the sensor will be PT100.
And we need to control ~8 heaters (cartridges, bed, chamber…).
Now we are using a good old ramps 1.4 with marlin but it’s seems to be not the best. We are using all the pins available on the board and we still miss some.
Also marlin is not the best to use an extruder with multiple heaters (for a pellets extruder we need 3 cartridges at different temperatures).
Here are my questions:

• I saw that with the duet3d board we can use extensions boards. Could we add more than one extension ? Because I read 3 heaters on the main board and 5 heater on the expansion = 8. And maybe we will need more.

• Is there enough PINS ton connect 13 temperature’s sensors ?

• Which firmware will allow us to control multiple cartridge for one extruder ?

• What slicer/ controller do you recommend to record temperatures during all the printing process ? Octoprint ?

• Is the Duet3D 3 board ready to use Nema 23 ? I think so because I read (4.45A RMS, 6.3A peak)

Thank you for your answer, I really appreciate.