@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

@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...