Dimensional Print Studio


CETUS2 User UPDATE 5/9/2022

I am very satisfied with the two color operation of my “prize” CETUS2. Most know it was a New Year’s Wish reward from Tiertime. A pre-release edition of the new CETUS2. 

The hardware meets all my expectations and will be improved in the production release. Things like the video display, dual processors, replaceable nozzles, and wire and cable routings will be some of the changes. Tiertime has already given notice the new version will look a bit different.

Read more: More CETUS2 User Thoughts

MayDay, only because it is May1, 2022. No distress, yet.

CETUS2 (production) is coming along very slowly. I am so blessed in a non-religious way (ok - lucky) to have a pre-production version with which I can play. I call it play because I have no instructions. I just learn by playing. It works for me.

I am able to create very decent prints. I have had prior experience with single nozzle dual and triple filament printers. So I know what to expect.

Read more: MayDay CETUS2 

First PETG print on my Cetus2

Using my trusty "dented.stl" model file. I decided it was about time to experiment with other filament types. I have some PETG transparent red and blue that I loaded on the Cetus2 feed system.  For this print I ran Nozzle3 (the 50/50 mix) at 240C and a layer height of 0.25mm. Speed was set to "normal".

The print looks quite good with very even all around deep purple color blending and no evidence of nozzle "color position stripes".

I had to create a new material file for the PETG and manually configure it into every master file (4) that I have created. Then from there, copy once into the Wand material files out of a created .TSK file that was configured using the PETG material defininition.

Material configuration is still a poory implimented clumsy function within UPStudio3. It should be a one time one place configuration process connected to any routine (including WAND) that needs the data, Making any later adjustment means going back to every location it is stored and doing a separate edit. Very poor practice. I hope this is on the improvements list.

I have also noticed that UPStudio3 no longer appears on the the Tiertime site as available software to replace the standard UP Studio used on all other printers. I am assuming UPStudio3 is being especially configured for CETUS2 use only.

However, I can find other than CETUS2 printers in UPS3 after adding a .stl file and checking the printer listing again. 

This is the first 2 color 3D print I produced using the new UPStudio3 (UPS3) version 3.2.5 using the “Paint” command. 

The original .STL file is a once piece, single object file I named “dented”. Other examples of this print can be found in the blog. The colored areas here are selected with UPS3 with the “Paint” command selected within the floating drop down menu.

Screen Shot 2022 04 23 at 125825 AMThe cursor is used to select flat enclosed areas in the drawing within selected angle ranges. I am not yet fully aware of everything this command will permit in selection as this is my first attempt and have not seen nor received instructions.

I chose to use the purge tower as I wanted best results with this first print. I do believe the “shadow” (no tower) option will also work. I will try a print using that option later.

I posted in the kickstarter forum, there are several more print options in this new 3.2.5 release. The print extruder Entity ID can now be selected in the “Special” command tab assigning print function to specific nozzles. That was not used for this print.

Read more: UPStudio3 V3.2.5

As you (must) know by now, the Cetus2 3D printer shown in this blog is a pre-production version. Many detail changes have already been announced for the production unit. 

I have a new production Cetus2 on “reward” status with Tiertime. It may be delivered in late May or June of 2022. That provides time for design change and improvements to continue. I suspect it is mostly a build material supply issue as Covid-19 (et al.) slows deliveries.

No problem for me. I have a working Cetus2. It does give me a chance to offer first hand user experience and suggestions to the Cetus2 build team.

Read more: Cetus2 Feed Guides

The lead picture is four, two color coasters all printed together. One does not have to look too close to notice there is no change color purge tower. 

I really like the complexity and color blend in this design. So I decided to print four-at-a-time before I made a filament color change. Oh, yeah, that and also just because I could.

If you are not familiar with single nozzle multi-filament (and color) FDM printing, A purge tower is a structure on the build plate where the printhead travels to figuratively “blow its nose” when changing colors. 

Read more: Just Coasting

Two Color Blend

Just created a new print combination on the Cetus 2. Combining nozzle one and nozzle three using a shadow purge. Nozzle one is a single color and nozzle three is a 50/50 color mix.

When nozzle three is in use for a print there is no possible way to use a purge tower. When flowing two colors 50/50 blend at the same time, the designers thought there would be no need for a purge. The purge tower function was therefore never programed In UPStudio3 to purge with nozzle three in use. (I know Cetus2 designers are re-thinking this limitation.)

Read more: Two Color Blend

I decided to get back to reality with the two color printing of my pre-release Cetus2. I have spent considerable time experimenting and exploring the alternative methods of purging the color from the nozzle. This was like poetry in printing...

That exploration includes standard purge tower, purge tower internal to the model outline, On The Fly (OTF) color change, and what I call shadow purge using the interior fill of the print. They all are possible and all work to a certain degree of perfection. The one to use is a matter of choice and need.

Read more: Ode to Purge

Deeper Into the Shadows

I did some critical testing of the “shadow purge” I discovered with my Cetus2 (C2) printer. I caution to say this is not yet the approved “shadow print” method being developed by Tiertime for the release version. At least as far as I know. 

I stated in a previous posting that I discovered (quite on my own) that turning on “Infill Preferred” causes a hidden purge within the interior of the print.

It worked quite well on a vase print I displayed. But I was concerned how it would do in fine details where there is not much purge area.

Read more: Deeper Into the Shadows

Hiding in the Shadows

My Tiertime UP Studio3 has been hiding its absolutely best printing feature right under my nose for almost a month. Far more impressive to me than the On The Fly (OTF) filament change.

OTF is a cool trick. But because of its limited application to the printing I love to do, I currently have little use for this feature,

But a little option hiding way down low in the PRINT options tab in the “Seam optimization section of UPS3, is the best feature in the entire package. It is labeled “Infill Preferred

Read more: Hiding in the Shadows

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