I have two in use for various things. They are in Argon NEO BRED cases- metal case, thermal pads, and fan. I recommend these- my temps stay good and I never throttle.
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Howās the progress on the V5?
I donāt know if Iām too late for this, but as part of the troubleshooting process for my printer, I went back to make sure that I had the top and bottoms plates aligned correctly as the CAD wanted.
I drew up a quick alignment block to keep the holes aligned, as well as the spacing from the rails exact as the CAD was drawn.
@Jonathjon and @vicious1 did not do this for their printers and did not have any problems, but it might be some cheap insurance for you if you arenāt already past that step
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Iām ready to start assembly, except I need to finish my LR3 to cut the panels for the frame.
Thatās awesome, I was about to do the same thing, thinking also that it might be helpful.
When you started troubleshooting your machineās potential alignment/pulley/belt issue causing some kind of artifacting- I started thinking even more about assembly/alignment jigs for mine.
So this is potentially very timely and interesting to me.
Thank you, this is great input.
[ Long winded 
]
OK, itās been a -REALLY- long time since I posted any updates to this thread, but Iām coming back to the Repeat build. But first yet another detour.
Iāve long had a Lulzbot TAZ 5, itās been a long lived beast even if older and needing constant attention. Itās got >20,000 hours on it, and I had a spare in storage for parts. I decided over the holidays when several printers went down to start getting all my stuff in order, fixed or given away or torn down.
Iāve considered for quite a while tearing down the TAZ printers to use as frame parts for a Repeat V5 build, but never pressed on.
Over the holidays I got a bunch of printers running, including some work on the TAZ. I also found a smaller makerspace a ways from my house had some TAZ, and had a discussion with their 3D printing person. Long story short, instead of donating TAZ, I ended up with more spare parts printers. LOL. (Or, to rationalize things, extra frames for Repeat printers.)
This also includes one of the later machines- a TAZ workhorse.
Fiddling with all of these reminded me of what I love and hate about these machines. Theyāre very rugged, but also klunky and awkward.
The newer ones that have a kludge bed leveling system where the nozzle has to make electrical contact with metal washers at the four corners of the bed. The system is an idiotās exercise in overcomplicated rube goldberg engineering. This is why I struck with the Taz 5 for so long, wishing only that Iād had the time to add a BLTouch to it.
In going through the stash of new parts printers, I came across a Taz 5 with a BLTouch on a stock 2.85mm extruder, and got it running. I started using up more of my old 3mm filament and remembered why I put some of it asideā¦ This grey PLA is NOTORIOUS for clogging, jamming, and not sticking to any bed under any circumstances. I got a HEPA filter mount for my new Prusa printer out of it, which made me feel pretty cocky about it:
You can just make out the BLTouch, and someone had already upgraded the bed to a magnetic spring steel build plate.
Next print up, I fired up a set of FlashForge A5M plates (Doug Josephās design), for a friendās new (used) A5M. Disaster:
Not really shown as Iād already removed it was the ball-O-PLA that surrounded the nozzle and hot end, and must have broken a wire on the thermistor. The printer had stalled with a Maxtemp error in Marlin.
Iām going to start tearing down the spare TAZ to get cracking on my Repeat (more on that in the next post belowā¦).
Meanwhile, I do have a big box of cast off H2V2 extruders due to some wheeling and dealing, plus a new in box original H2V2 that I bought for the Repeat but havenāt yet used.
On a whim, I tore into the H2V2s and from the pile of dead parts, reassembled one with seemingly good parts from multiple donors. I also grabbed the new old stock one out of its box.
Iām setting about building up some new tool heads for the TAZ that will remain after I get going with Repeat builds.
Iāll finish building these up, and swap to a pair of TAZ, then debate which of the remaining donor machines gets torn down to frame up the Repeat. More on that in the next postā¦
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OK, continuing my ramblings about the on-again , off-again Repeat V5 build in my project queue:
I have Ryanās CAD saved locally, but every time I try to dust it off (like, today), something bothered me.
It occured to me today what that is.
The design of the repeat seams wrong-way-round to me.
Iāll elaborate.
The CAD lets you size a custom frame to tailor the printer to the bed in use. Thatās great for a full on custom printer, but is that the best way?
The belted flying Z doesnāt need a custom outer machine frame.
If the bed has the three mount points on an 80/20 T, or a milled sheet of material, the whole thing could use standard sized frames, and the only customization then is the mount plate for the heated bed.
What does that do? It lets you make kits, so a first-time build is approachable at most skill levels.
Thatās what Iām going to explore with my build, with some newly identified objectives:
- Stock size frame suitable for up to ~305mm square build plate.
- T or milled plate to adapt my heated bed to the stock frame.
- An extruder/toolhead that isnāt an H2V2, preferably one used on other machines.
- Klipper firmware, probably SKR pro but perhaps even Octopus or Manta.
- Outer panels for the stock frame suitable to be milled on LR4, saving a crap ton on extrusion connectors.
- DIN rail electronics cabinet at back.
- Z brakes.
Stretch goals:
- Build chamber heat control
- Build chamber exhaust control
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Designing for adding INDX now, or later?
Nice! Thoughts on space grade aircrete panels or insulation ?
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INDX will go on my shiny new Core One L as soon as I can get my hands on the INDX upgrade, then Iāll consider adding it to other machines. Iām super excited about that, by the way.
Iām going to try and get up to speed on using Klipper on all my machines save the Core One L.
Thereās so many rabbit holes that could lead me down.
The only aerospace grade panels in my immediate future are the ones Iām fixinā to start slapping avionics on in 2026.
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Whatcha building?
Interplanetary spacecraft 
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Ok this sort of brings it back full circle. Iāve been studying the Voron toolheads, and am liking the DragonBurner V8, which has really good modularity.
Iām thinking of building one up for the Repeat with an Orbiter extruder and a TZ V6 2.0 hotend.
After much thinking, it turned out I realized Iād seen something similar here in the forumsā¦
None other than @probrwr build here:
Mike- how are you liking that repeat build? Any gotchas or warnings about the DragonBurner on a Repeat?
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I Did abandon the Dragon Burner. Honestly not because it was a bad system but with the cutter added it got really tall.
I went to the AntHead with the Leaf Cutter. It has a small problem in that the lever is too short and does not get enough mechanical advantage to cut reliably. The project has actully gone towards using the CrossBow cutter.
I really like the AntHead overall and it pretty much fits on the Dragon burner mount. I have a slight mod to mine that makes it work great. I am actually about to put another one on my V4. That one has a Happy Turtle Lettuce Feeder on it so I still need the cutter.
No complaints on either from performace standpoint. I was looking at the Yavoth before I found the AntHead though.
I have mounts for the DB for both V4 and V5 standard and reversed belt setups.
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Ooh. Are they shared?
Iām not going to use a changer so arenāt planning a cutter for the repeat. If and when one of us figures out an INDX setup for a repeat then Iāll consider that.
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Not yet. Which ones are you interested in? V4 or V5 and Normal or reverse belt? I would recommend reverse as it puts the nozzle way closer to the center of the rail.
Iām going to build a V5. I donāt know enough about normal or reverse belt to decide at the moment.
What does it entail to do reverse belts vs normal? Nozzle in the center of the rail seems like it would be better all things considered.
Did you try it both ways? Are the pictures in your build thread?
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I made the decision based on CAD. I went with the reverse belts as it put the nozzle closer. I have a set of mounts that work for it. You just reverse the installation of the X axis so the belts are in the back. Easy Peasy.
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This is what it looks like with the belts reversed.
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Alsoā¦
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Youāre right, that looks better to me.
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Funny, on 2nd lookā¦ I have that same exact heat set insert machine
I used that machine today, which Iāll mention in the next post below (long winded, coming up)
The shny new Core One L is busy today with critical grandkid assignments (!!), so itās over to the A5M to start printing Repeat parts. Look familiar?
Now off to write the next post.
[ Long Winded ! ]
All righty, then. After determining to make up some new toolheads for the Lulzbots, and having a HUGE box of dead H2V2s (and a new in box V1)ā¦ I set about doing extruder rebuilds.
The issues with these extruders amaze me.
Someone at BTT needs a good swift kick in the backside. So close to great, so close to garbage.
These will be familiar sights to anyone whoās ever fought with one of these:
Slowly worked through the box. I have a pack of replacement bearings, and I thought I had some thin stainless washers I was going to use as shims for the ratted out recesses. I still might, I have quite a pile of parts to work with.
Ruled out a bad thermistor here, a bad heater there, an ugly hot end blockā¦ slowly working my way through mixing and matching and replacing things.
Itās one way to spend a Sunday 
Used that heat set insert machine I mentioned in the post above. Love that thing.
End result was four probably good extruders, and three TAZ toolhead printed parts sets.
I need to wire these up and mount the BLTouches (I only have two available at the moment). Making the connector harness to plug these into the factory cable assembly isnāt my favorite task!
Oh, and since I mentioned it a few posts up above, the HEPA filter I made for the Core One L right before the TAZ 5 extruder got wrecked:
It uses a Tesla cabin filter as the media. Super cheap, $20 for a two pack at the online bookseller.
Iām also going to start measuring and trying to sort out what frame size makes sense if using all the āstockā MGN rails that I bought back when prepping to build the Repeat V5.
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