Would the extra weight of 1’’ lead to any complications? Or is the extra stiffness a decent tradeoff?
I’m not a mechanical engineer, but my understanding is that all the strength comes from the skin of the tubes, and having it larger makes a much bigger impact than the thickness or the amount of material. So the strength/weight ratio is going up with a larger pipe.
There may be some lower limits on acceleration, but we are far enough away from those limits with the regular settings that I don’t think it will matter.
People have been putting the DW611 on the machine, and it still works well, which adds a lot of weight and no extra strength, so I assume it will be fine, or else Ryan will scrap it before he releases the files to anybody.
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I think the Primo will be able to take advantage of the 1 inch better than the burly could ever so if 12 x 12 ECT. use the burley bigger primo and sheet goods LR2 it is a great system covering all. The buley is great I still cut my cribbage boards on one and will upgrade it soon to to primo my primo is busy with other things at the present I fall into the camp of i like to be on the cutting edge but not bankrupt myself I watch my costs and my budget and respect others for the same. Don’t intend to step on anyone’s feelings.
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I did the same thing until I upgraded to a direct drive extruder. At that point the oiler didn’t work for me.
I think the complaint about no 3/4" either comes from people who have already built burly (or older) and wanted to reuse pipes, or from people that jumped the gun and already bought their pipes.
For those in the first camp, I can understand their frustration. I thought long and hard about buying new pipes in order to upgrade to primo. If I had decided to save money and reuse my old conduit, I’d now be told I have to buy new anyways. A few dollars more between 3/4 and 1 when starting new is no big deal, but having to buy all new pipe is $30 or $40 more to the upgrade cost.
From an engineering point of view the larger pipe makes sense. From a business point of view, you just told a large customer base they have no upgrade path using their existing tubes and they feel shafted.
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Oh, I’m certainly not trying to poop on it. Hopefully I’ve got enough history here of not pooping on things that that wasn’t the first thing that came to mind.
I haven’t been around from the beginning, but I’ve read a lot about the machine pointing to a smaller intended size. I was just trying to get at the idea that it was “good enough” for the intention and design tradeoffs. I’ve only seen a few mpcncs 12x12 or smaller, including mine, and they were all aimed at rigidity, so 1 inch tube anyway. I’ve also seen video of lionkev’s emt mpcnc cutting aluminum, so I know it’s capable. I was just trying to emphasize that it’s main draw was cost. I hadn’t considered availability because I’m fortunate enough to live fairly close to a metal depot where I can get pretty much whatever I want at a GREAT price.
But then, I’d hope 1 inch emt is just as available, soooo.
So I think we agree on my main points?
I think yours is the best response, really.
“If I’d asked people what they wanted, they’d have said ‘a faster horse’”
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“A few dollars more” - sure, it is only about $3 more ($9 vs $6) for 1" vs 3/4". I get that, but I already purchased the 3/4" (yep, my own fault for trusting, should have waited). At 7 pieces that is an extra $21 and i get to add back in that original $42 getting the first 7 pieces. Now I am at an extra $63. Now if I add in the original cost of the $42 i spent before, i am up to $105 just in tubing. At that cost, I should have just got the 1" DOM (4’ for about $20 less, plus shipping). (source: https://stockcarsteel.com/dom-tube-1-o-d-x-083-wall.html ). If i am going to 1" I really don’t want to use EMT at all as I would rather have went with SS or DOM for the rigidity, but as a first time builder the cost seemed prohibitive. As far as I know, Menards does not carry DOM (at least I couldn’t find it) where I got the EMT and at best I will get a giftcard which is still money spent and not cash in pocket to reuse.
Spending $42 was a lot easier than $80-$100 for the SS/DOM (as 1"EMT was never discussed because why would you when there is SS or 3/4" EMT to choose from). Also as a new builder coming into this, I still need to get everything else. For those that are thinking or will comment “then you cannot afford this hobby if you can’t spend the extra” then that goes against what I thought this was all about, a cost effective entry CNC machine you could build at home. With that mentality of just a few dollars more you can eventually price it so high it becomes worth it to just buy an already made tried and true system.
This is your business, not mine. In the end it is ultimately up to you what you want to support and the customer base you want to provide to. If you go with the two sizes and it makes your life easier, then great. I am just saying that it would have been nice to know that before hand. I get things change. at no point did i hear at the beginning that there was a possibility of dropping the 23.5 size. If there was it was lost in the comments and I would have sourced the 1" at that point (and I had been keeping up past the initial public release of the 1" until i heard that this size would be last and could be a couple months, then i took a break and checked in only once in awhile to keep current).
Like said elsewhere i am also an RC plane’s and 3D printing so yes, this compete’s with other hobby’s too.
I am done ranting and rambling. Hope everyone has a great day!
1 inch conduit at HD is 12 dollars US 16dollar CN Menards also has 1 inch so your gift card refund will work there to (sorry worng poster) BUT STILL REEVANT
Upside, I don’t think I’ve ever seen that happen here, or even in the Facebook group. Trust me, you have really good company in this user base, and lots of it.
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I run into all the time in the RC planes side.
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you run into that in ‘anything’ that’s considered a hobby. Pisses me off when people make that statement. Like, just because I can afford $30 but not $60 for something I suddenly shouldn’t be doing it?
heh… I was trying to figure out how that related to my post 
Yep saved for a yesr for the 1 inch SS for my burley still using a Uno and cncshield Payed 3 dollars for on amazon for controller bought the kit from Ryan to support him
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1" EMT yes, but not 1" DOM as I would prefer if going to 1" as I stated. The point would be rigidity.
is there a big R or stock and field or tractor supply near you check them i think someone was saying 1 inch conduit was as or almost as strong as 1 in SS or did i misinterpret that use the card to get hte wood for the spoil board
1" ID Conduit should be more rigid than 1" OD DOM or SS. There’s more that needs to be seen, but the theory is pointing towards 1" EMT being the most rigid.
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I don’t understand most of the complaints that I am hearing. Cost? Not much difference between 3/4" and 1". Already bought the wrong size? I have never had a problem returning the wrong size. Inconvenience? I personally don’t look at another road trip to the hardware store as inconvenience. I live 25 miles from the store.
The only complaint that makes sense to me is waiting to begin your build based on an assumption that a certain size was going to be available. You could already have a new machine built in the time you have waited. This can be frustrating.
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You make valid points here. But it is the same as the previous ones. Can you return your conduit?
If you had not already bought your conduit what size would you want?
Not sure why your math all involves 70’ of conduit (7 sticks), 2 should be far more than enough. I only bring this up because if you had not already bought the conduit and are using the standard <20’ the cost difference is $8.54 (HD).
For new builders 1" is a no brainer, I am most concerned about the opinions of people with 3/4" EMT builds of any previous generation. Previous conduit owners have already been shafted by me even if we use 3/4" because the footprint and build area are vastly different, so I felt if there was ever a time to change it would be now since most will need to re-buy metal as it is, right? But if any of you feel I am somehow turning my back on you speak up. So far it has just been people that bought brand new conduit, that I am sorry for but my suggestion is return it. You should not have cut it because the calculator will be different for that size, so I do not think that is an argument I need to have. I am concerned with the feeling of previous build 3/4" people.
Just to be clear, I rotated my conduit every few months and replaced it once a year do to wear (the reason I didn’t think any previous user wouldn’t care). DOM and SS lasts 10x as long, in the end it is still the best option, and cheaper in the long run if you are a power user.
I figured I was going to get some flack from the people that saved up to buy DOM or SS and now there is a possibility of 1" cheaper and better.
I think this is all hitting me oddly because I thought the people that did not want to spring for the expensive pipe were all basically going to end up with the best version, but instead I feel like I should just release a 3/4" and shelf a possibly better version so I don’t look like I am screwing people over.
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3000!
Damn, too early. Crap.
Edit:
There.
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here we both missed nope looks like your right I got 3000
I used to run into it in other cnc groups as well, from pros to other diyers. Just not with the mpcnc crowd. Great people, here.
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