This. So much. 
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@vicious1 juts finished some mirrored print files and noticed that the build version letters i.e “F” are mirrored as well 
Absolutely no big deal but in consideration of the discussion about further versions I just wanted to give a hint to check the upcoming letters for mirroring. P <-> b, W <-> M etc.
Is there an estimate for the trucks V2?
Hold up a second. The 16% larger than the “J” is my way of making ryans design into a 1” conduit machine. Ryan may do things quite different, as i feel he will, in order to simplify things on his end as far as stocking hardware for all versions.
I’m not an engineer, on paper anyways, but i’ve spent a lifetime at reverse-engineering virtually everything i could get my hands on. I don’t know the math involved in how to calculate if something is strong enough for most things, but i can usually look at something and tell you where it’ll most likely break first, as well as make a repair that will never break again.
I know the lowrider was designed for the larger format, but I see the mpcnc as the better choice for my intentions, but the 3/4” conduit being the weak link in the chain to build it larger. I’ve had some 1” EMT laying around from a brick patio project that i used it to level out the sand. I just felt it would be ideal to use for a half-sheet mpcnc. Even at a 5ft span, it’s very rigid.
As far as parametric design, you’re unable to scale the bearings, hardware and such…maybe i just don’t fully understand the ins and outs of “parametric design”
With what i’ve been working on, basically EVERYTHING is scaled up. After doing some math, it seemed too easy not to do it. The bolts are 3/8x1-3/4, and the bearings are not the 608’s.
However i have edited things to use the same M5x30 bolts, the 12mm pulleys, and the T8 nut and lead screw.
I went with the XL moniker, because I thought XXL might be a bit presumptuous. 
I had already printed the Burly months before Tom Salamderer started his build, and it wasn’t until sometime later that I read the fallout from it here on the forum. I haven’t released any of my revisions to anyone. I hope I haven’t hung myself from the same gallows as Tom has.
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I just want to see it
1” EMT for me. I’ll hold out a bit longer. Is there a SS or DOM equivalent in that size? 
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I actually picked letters that do not mirror, so I know which part it is.
This part is fun, and my designs are mostly parametric, meaning I have set values “22mm”, and I have some dimensions that are variables, diameter plus.03mm, diameter/2+5mm, ect. So I go into the design and change the value of diameter, the entire model rebuilds. The issue is sometimes the two overlap or crash, and the rebuild will fail, then you spend a considerable amount of time trying to edit things to work by changing fixed values or entire design choices. So the only way to make a fully parametric design is have no fixed values, so instead you can choose two values and constantly flip between them as you build, then you know every size between them will work. Anything outside the tested values is sure to fail for a small or large reason.
As an example The 25.4 to 25mm for the core was just that simple, I had one or two small chamfers that did not work and I just changed the value. You can’t even tell the difference.
Now because I make things to very tight tolerances changing the core to 23.5mm failed hard, real hard. My core clamps do not fit, so they need to be redesigned. The rebuild failed in the first few features out of a couple hundred features it takes to build a core. So you start at the top and work your way down the list. So a smart guy would have flipped between 23.5 and 25.4 while designing…or 29.5 and 23.5…
Now imagine that for every single part and all the fixed values. Bolt holes, bolt head clearance, belt width, path, clamps, corners.
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We still love you
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Any one interested in stoking my ego and doing an experiment at the same time???
I would love to see the Primo climb the search results over at prusaprinters for “CNC”. Currently they are at 14 and 15.
https://www.prusaprinters.org/social/47417-ryan-z/prints
I am thinking reviews should do it, but maybe likes, or collecting it help. Not really sure as all the models above it have less of all three of those, so maybe it is just time?
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There was a time at thingiverse I was in the top 20 models overall and top 1 for CNC for ages.
Just an ego thing really
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Do you want 4000 comments? Hahaha
Never know…maybe
Pretty crazy, but you don’t get notifications about comments. You have to log in and check.
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We can do that
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I liked and added the Primo to a collection. How do you get/give “stars”?
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I tried for 1337 but the post numbers don’t line up with the actual posts anymore. I think some folks deleted posts, and the numbering didn’t change.
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Right under the part title, it says if you download it it will send an email. Wondering if those actually get sent out. Quick everyone search your deleted mail!
I just did my quick and dirty flex test on the 1" EMT. 67" span, 10lb point load.
I tried my old test to compare numbers (46") it was to close to tell so I went to 67".
1" EMT ~3mm deflection
25.6mm SS ~5.5mm deflection.
That is pretty close but more than I thought it would be. I wish I had a stick of the DOM sitting here but I can only get 48".
Now on to see if the parts will work at such a large size.
Just to be clear, we only see loads of about 3lb, spread over two rails, and it is not a point load.
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What did you do about the holes? Did you scale it up then fill the holes and nut traps back to the right size?
Well, not looking so good.
Probably not going to happen. The Z axis is so big it would need it’s own tool mounts, and the CAD is not cooperating on any part so far.
Pretty sure we are just going to have to call it. I might have another look but I have the 23.5mm version nearly done and this one is in far worse shape, maintaining extra tool mounts on top of that, no way.
I think we save the 1" for the LR, maybe 1.25" where the added strength would be a better benefit for the long spans.
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So, i get to rebuild a lowrider next year? I’m in!
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