Yup, Another Non-Voron - Fabreeko RatRig V-Core 3.1

[Penatr8tor]

Update!!!!

Got the frame built. I had to wait for my plexiglass sheet to arrive. It came covered in protective paper that made it easy to layout the cut lines and hole centers. While I was waiting for the plexiglass to arrive, I built all of the Z axis sub-assemblies. Which are now installed on to the frame.

Rear view of electronic bay. Umbilical will enter from the top and wires will route thru the center channel and branch out to power and controller on either side.

 

Parts printed for the toolhead.

 

Big ol' fan cover for the Pi and Octopus. Found this on Printables. Combined mount for Pi and Octopus boards with a couple of 120mm fans.

More coming. Just finished up the XY gantry. Will post up some pic's later today.

[Demosth]

So happy to see some non Voron's here at TeamFDM  

Thanks for posting updates @Penatr8tor!

[smirk]

3 hours ago, Penatr8tor said:

That's a solid looking frame, but does kinda look like the poor thing fell over spewing it's guts.

[Penatr8tor]

@smirk It does LOL. I can tell you... it's definitely solid...

120 M6 screws solid. 

[Wick]

wow, this frame looks rock solid, take care of your spinal discs when lift it up!

[Penatr8tor]

37 minutes ago, Wick said:

wow, this frame looks rock solid, take care of your spinal discs when lift it up!

I'm already wearing that big wide belt that's used for lifting weights. 

[Penatr8tor]

A little update to the RatRig V-Core 3.1 build.

Z-Axis leadscrews and arms installed. The bed is on but not done obviously. Just using it as a table for now while I build the rest of the printer LOL.

 

Parts for toolhead printed and inserts installed.

 

Tilt test.

 

Power inlet installed. I'll probably integrate it into the side panel later, when I do the enclosure, but for now it does the job.

 

Toolhead built and belts attached and tensioned. Wires temporarily run in tech flex to simulate the umbilical. I ordered a bicycle brake cable kit so I can use one of the steel cables as a spine to keep things tidy. Although the tech flex looks to be good enough. We will see how much of a pain it is to implement the wire spine.

 

Close up of toolhead. I still need to decide on, and print, the front fan cover. This one is temp.

 

Starting to look like a printer...

I still have the bed for finish, wires to run and electronics to mount and hook up.

 

 

[Wick]

very interesting construction, love the kinematic mount of the bed. Are you going to use the octopus from the first pic ?

..found an interesting cooling block for pi/ssr/octopus on printables.... https://www.printables.com/de/model/191934-controller-base-with-cooling-for-btt-octopus-pi-ss

[mvdveer]

Had my name on list for one, but all sold out within 5 minutes of getting the e-mail. (Only had 500mm x1 left - too big for me) The only machine left was the V-Minion - so what did I do - Ordered one of course.

[Penatr8tor]

@Wick I like the bed design as well. It's one of the things that attracted me this build. Especially the design of the parallel pins with magnet underneath for the bed arms. Pretty impressive.

So for the electronics... this is what I'm using. Octopus 1.1 MCU, Raspberry Pi 4B 1 gig, Mean Well LRS-350-24 (for MCU) and LRS-100-5 (for Pi and LED lights) SSR is a C-Lin unit HHG1-1/032F-38 although I do have 18 legit Omron 63NA-210B-UTU SSR's laying around in a box that I could use if I wanted. I'll try the RatRig POS unit first and see how that works out. The reason I have so many Omron SSR's is that I had a bed heater issue with my Voron 2.4 and bought 2 new SSR's from Mouser. Instead of sending me two SSR's... they sent me two boxes of 10 SSR's in each box.  The motors from the kit are all LDO's including the one attached to the LGX Lite extruder.

I downloaded a mount for the Octopus and Pi from printables that will accommodate two 120mm fans. The mount clips to the DIN rails I have installed on the rear panel.

Layout will be power on the right side and Pi / Octopus on the left. Should be pretty straight forward.

[Penatr8tor]

6 minutes ago, mvdveer said:

Had my name on list for one, but all sold out within 5 minutes of getting the e-mail. (Only had 500mm x1 left - too big for me) The only machine left was the V-Minion - so what did I do - Ordered one of course.

Awesome! I can say with conviction that my little V-Minion is nothing short of impressive. It's my goto printer for 90% of my PLA prints. It just prints and prints without fail and without issue. My only hope is that the big V-Core 3.1 is as good as the V-Minion.

Super fun build... Definitely install the RatOS flavor of Klipper on it. IMHO... it's how klipper for Voron should be. 

[Penatr8tor]

Getting a little closer to the end... But let's be honest. Is there really an end? 

I've got the electronics arranged, this should work OK. I wish I could have gotten some DIN rails that were a big longer but what I have will work.

Power is on the right (left looking at the rear) and Computing is on the left. I had to mount the SSR on the left because I ran out of DIN rail on the power side.

 

With fans...

 

[mvdveer]

Looking really good - neat and tidy. Like the pi/octopus/fan mount. The electronics are going to think they are in Alaska, not Texas

[Penatr8tor]

OK, Here we go...

Powered up - Check

No Smoke - Check

XYZ Home - Check

Fans - Check

Extruder - Check

Probe - Check

Currently I'm dialing in my Z_Offset... Should have my first actual print shortly...

Here's a couple pic's

[Penatr8tor]

First print, It's a bit rough but acceptable for a 1st print.

Absolutely nothing was calibrated in advance, All I did was hit Upload & Print.

On a side note... It took 3 tries to finally get it to print. It wasn't that things weren't working as expected it was that the print wasn't sticking to the bed. I'm like, Man what is up with this crap, 1st layer is fine, everything looks fine and then I decided to check the spool of filament... It was ASA and I set everything up for PLA. Dumb thoughtless shooting from the hip stuff... It'll bite ya. 

Here... Crappy pic of a crappy 1st cube.

[Penatr8tor]

I decided to print something larger than a cheesy calibration cube... This is an insert for a square drippy bucket and measures 90mm x 90mm x 95mm.

As far a tuning goes... I really only adjusted belt tension by feel. I already have (if you didn't see it) an ADXL345 mounted behind the front fan shroud on the toolhead so as soon as I get back from Florida in a couple weeks... I'll do some input shaping. I'm also looking forward to trying the belt tension macro that is preloaded in the RatOS version of Klipper. 1st I got to help get Mom and Dad moved into assisted living. Sux getting old, but it's a really nice place and they'll be happy and get good care.

So here's the print. Not bad for just hitting print.

[Penatr8tor]

Oh, I wanted to mention...

Speed ~100mm/s exterior ~120mm/s interior.

Filament Polymaker PolyTerra Matte Black PLA @ 200c

Bed 60c

Print time 5 hours 33 min's

I'm basically using the stock profile in SuperSlicer with a couple minor adjustments.

[Penatr8tor]

Did a Deadpool bust before I left. I'm posting from IHOP somewhere near New Orleans lol.

[Razor1666]

On 4/8/2023 at 11:38 AM, Penatr8tor said:

Deadpool

Looks great.... Mine didn't turn out as nice but I started painting it anyway.. 

[Penatr8tor]

@Razor1666 Looks really good painted. What paint are you using? My niece tried painting a few prints I gave her and she had trouble with the paint not sticking. Any tips would help.

[Razor1666]

3 minutes ago, Penatr8tor said:

What paint are you using?

Just some hobby acrylic paint I bought on Amazon..... https://www.amazon.ca/gp/product/B07DWMTNDJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Did she prime them first?  https://www.amazon.ca/Vallejo-Gloss-Black-Primer-200ml/dp/B013WXHQNA/ref=sr_1_6?crid=1LQMMBPN76BAO&keywords=primer+for+miniatures&qid=1681134279&s=toys&sprefix=primer+for+mini%2Ctoys%2C110&sr=1-6

I usually give them a quick wash with soap and water, let dry then prime.  I think that's the key.

My hands aren't as steady as they use to and I can't see worth a da!@... there's that age thing again but I like to paint when I'm at the trailer... I find it relaxing

[Penatr8tor]

@Razor1666 Thanks, I don't think she primed them and that's her problem. Thanks for the link. I'll buy her some of those paints and primer. 

[Penatr8tor]

Welp... I finally got a chance to spend some time with my RatRig V-Core and thought I could close out this thread somewhat by sharing some prints that I recently ran. I have to admit, when I first started printing I had my doubts but after some tuning... All I can say is WOW... I am impressed. After running Input Shaping... The quality is really really nice even at 200mm/s.

Of course pictures don't do the prints justice but they do show every little micro detail to the max.

This was my problem, VFA (Vertical Fine Artifacts), and is shown on the flat surfaces and even on Mando himself.

I used a RatOS macro that would test and print a graph of my belt tension where both the upper and lower belt loops were overlayed. After about 5-6 tries... I got both curves as close to each other as possible.

Here's my next two prints after input shaping and belt tensioning. On these two parts I used SuperSlicer running the nozzle @ 200c and bed @ 60c, print speed was 80mm/s for outside perimeter with 150mm/s for everything else.

 

I got a little under extrusion on the test cube. It's 30mm square with .15 mm layers.

Next I did a little farting around with OrcaSlicer. I need to do a test with tree supports and as you can see... the results are pretty good. Temps were 200c - 60c, Speed 200mm/s inside with 120 mm/s outer perimeter. I slow the printer down to 30mm/s for the 1st layer on all my printers and prints.

 

Lastly I shot a quick vid of the printer running. The print is 200mm/s inside stuff and 120mm/s outside.

 

[claudermilk]

Looks good. I've swiped that RatRig belt macro. I'll run it later as it seems I might have some tearing down to do soon. 

[Razor1666]

On 4/10/2023 at 9:50 AM, Penatr8tor said:

@Razor1666 Thanks, I don't think she primed them and that's her problem. Thanks for the link. I'll buy her some of those paints and primer. 

This is kinda random..... didn't know if you would be interested in seeing this. Just finished painting this guy