jedovaty wrote:We have printed v2 Umikot for the Robot It still needs a little tweaking, some related to the county library printer used (it's not tuned) and some related to the model itself. The lug/flange sections were extended to 29mm, but probably need a little more as the legs get stuck on the handle which I ended up sanding a bit; we'll try 30 or 31mm next. The seat over the basket in the base needs to be slightly wider as well, something was preventing the basket from sitting flush. For now, I just did a little haphazard sanding with my dremel tool to get it to sit. The 0.35mm acupuncture needles with 75mm length (on a 30mm handle, total 105mm) had to be cut to about 64mm and 54mm to match the design.

More tweaks over the next few weeks as time allows, we are trying to keep the changes within the model parameters rather than create a whole new model

Would love to see where this ends up. I'm very interested in printing one for my Robot as well.

Yesterday I designed a tamping station for the latest Umikot design, which has large lugs for holding the needles above inside. It is designed specifically for angled LM portafilters, but probably works with others with minor adjustments.

The latest print. This one is for @GregoryJ

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I'd start by leveling the bed and setting the Z offset. Then take a close look at the print speed, nozzle temp and bed temp.

On my Ender 5 S1, I run PLA at 220 and the bed at 50. The bed material/surface is also going to come into play.

Someone please print me one in the bay area for BDB !!!!!
This looks so awesome. Pinged a few printers on FB, but it seems complex to print so I'm expecting the quotes will come back high.

BTW what grease are people using to lube the gears, and do you just apply it on the gears only?

The type of lube used doesn't matter as long as it wont drip or leak or eat away the plastic. FWIW, I used haynes lubri-film plus, what I had on hand. You can probably use a little bees wax, candle wax, paraffin, dow 111, super lube, or some silicone spray. Whatever you have handy that's food safe / nsf. Mine was printed very rough using the library unit, but it took only a little to get the gears going smooth.

If you want to be part of the printing process, try your public library branch, they might have a printer program of sorts. You can check out the local makerspace or hackerspace, they'll have 3D printers for sure. Or, check etsy, I saw a variety of spirographic wdt tools a couple weeks ago as of q3 2023 running about $60 usd. Some even have bearings to make them smooth, and will come with the needles and stuff.

selfiegram wrote:Pinged a few printers on FB, but it seems complex to print so I'm expecting the quotes will come back high.

You can get very reasonable quotes on Treatstock. But Etsy is another possibility, with several different designs.

jedovaty wrote:If you want to be part of the printing process, try your public library branch, they might have a printer program of sorts.

This was a disappointment for me. The local public libraries here (Phoenix area) feature high-end 3D printers, but are only open for a few hours, not nearly enough time to complete printing.

RapidCoffee wrote:This was a disappointment for me. The local public libraries here (Phoenix area) feature high-end 3D printers, but are only open for a few hours, not nearly enough time to complete printing.

Ah, yes, I recall you writing that earlier. My post was primarily to selfiegram, who is up in the california bay area.. I'm pretty sure they will have libraries or hacker/maker spaces that have this service, although they might be back logged. Specific to you, though, I'm surprised they wouldn't just run overnight. If they won't do it, then they don't oh well. For fun, find a few other coffee items on the various 3D model sites and print those And, have you looked for local maker/hacker spaces? They might need a membership, and it's kind of fun you can learn how to use the printers, laser cutters, etc. The ones near me collapsed right before covid sadly, maybe new ones will show up again someday.

The library we printed mine ran the printer overnight later in the week and then let us know it was ready, about a week later. Also, expectations should be set.. the unit was quite rough (mine had pieces of plastic sticking all over, melted parts, etc), but I didn't mind, it was fun. The librarian at the printing station was pretty chill and genuinely interested in helping print the design, and looked like he enjoyed figuring it out.

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selfiegram wrote:Someone please print me one in the bay area for BDB !!!!!
This looks so awesome. Pinged a few printers on FB, but it seems complex to print so I'm expecting the quotes will come back high.

BTW what grease are people using to lube the gears, and do you just apply it on the gears only?