Duet3D announces new tool board at FormNext

deckingman

@fcwilt said in Duet3D announces new tool board at FormNext:

@Surgikill

I went and checked the video.

With the DI attached to the XY gantry how would you tell the what was responsible for whatever reading was displayed? Could not imperfections in the gantry contribute to the reading?

Thanks.

Frederick

You could direct your questions to me rather than via a third party.

But for sure if the gantry sagged it could imply that the bed was bowed or "dish shaped". My calculations showed that any deflection of the gantry due to the weight of the hot end was insignificant and the rails were known to be straight. But the important thing to note is how flat and level is the build platform with respect to the full range of movement of the nozzle. By fitting the DTi to the gantry where the nozzle is mounted, one is checking both the gantry and the build plate. If there was an unacceptable deviation, then one would carry out further measurements on the individual components to determine where the problem was. But it's a lot quicker to check the entire mechanism in its normal working configuration and only break that down into individual components if an unacceptable deviation is observed.

deckingman

@fcwilt said in Duet3D announces new tool board at FormNext:

@deckingman

I forgot to ask you what sort of surface do you print on? Directly on the metal plate or something added on top of it?

Thanks.

Frederick

Glass. 6mm thick plane float glass. I learned long ago that the process of having the glass toughened leads to unacceptable distortion. And yes before you ask, I checked the flatness. I've tried most other build surfaces but haven't yet found one that beats plane untreated, "hot swappable" float glass (with a little help from 3DLac now and then) and I'm still using the same 3 sheets that I bought about 7 or 8 years ago.

Surgikill

@fcwilt the gantry can contribute or offset the readings. Aluminum extrusion tolerance is terrible, straightness of 0.0125" per foot. Hence why measuring at 5 points and then assuming that those points will simultaneously be the highest and lowest measured points isn't really the right way to go about it. Even measuring the flatness of the build surface while on the machine isn't really correct, because you don't know if it's your gantry or your plate causing the inconsistencies.

If you are printing at 0.2mm layer height, there is a pretty large variation of z height you can get away with. As you try to increase resolution the problems will begin to show themselves. This is why mesh compensation is used.

Surgikill

@Surgikill said in Duet3D announces new tool board at FormNext:

@dc42 can you give us the exterior dimensions of the board? I'm trying to see how it will fit in my printer.

I threw some pictures up in CAD and scaled them, looks like board width is around 45mm without connectors, and board height is around 50mm without connectors.

dc42

@Surgikill I expect we will publish drawings and models next week.

nikscha

@elmoret Nothing stopping you from using a 24V heater at 36V XD
You'd get 2.25 times more power out of it!
(and a fire hazard lol)

Surgikill

@dc42 any update on this?

dc42

@Surgikill not yet, Tony normally does the drawings and STEP models but he is very busy with Formnext follow-up and SMRRF preparation.

edsped

@Surgikill said in Duet3D announces new tool board at FormNext:

@fcwilt said in Duet3D announces new tool board at FormNext:

@Herve_Smith

You consider the prices to be an issue?

The money I spend on hardware is dwarfed by the money I spend on filament.

Frederick

Toolboards are primarily made for tool changer setups, so multiply your cost difference by the number of toolheads. I'm currently building a tool changer, and each toolhead is going to run me close to $400. At some point, cost becomes a favor. When my toolhead alone is over double the cost of an ender 3 you have to take a step back and reevaluate.

I run RRF-36's on my toolchanger and wish I set it up that way sooner.

Surgikill

@edsped those actually look like they might work perfectly. A ton cheaper too.

edsped

@Surgikill said in Duet3D announces new tool board at FormNext:

@edsped those actually look like they might work perfectly. A ton cheaper too.

No issues on my end so far but I have to admit I'm intrigued by the scanning probe but at more than twice the price for the board not sure if it would be worth it.

fcwilt

@Surgikill said in Duet3D announces new tool board at FormNext:

those actually look like they might work perfectly. A ton cheaper too.

But they are a funny shape. Who wants a printer with parts that have a funny shape. Give me a good old rectangle every time.

Frederick

Surgikill

@edsped Scanning probe would be good. I guess I could have one toolhead with a scanning probe and a euclid probe, and use either depending on the build surface, then do the rest with a fly-rrf-36.

@fcwilt Although, I do like that most of the connectors are along the bottom edge, and the stepper is along the top. Connectors along the sides have been a real pain for me designing slim toolheads so I can increase tool capacity.

@fcwilt My Orbiter extruders have the same funny shape at the back thanks to their NEMA14 stepper so I am set. And it is amazing how you can hide the funny boards shape inside an enclosure so the one on the NEMA17 does not need a sheet thrown over it if companies is over.

edsped

I actually like the shape and as has already been said, having connectors on all 4 sides seems like it would add clutter. For me the RRF-36's are nice and compact. I'll likely grab the step file when it's released and see how it compares though.

fcwilt

@edsped

I was just making a funny remark about the shape.

I assume it is shaped that way to fit something else.

So what is that "something else"?

Thanks.

Frederick

jay_s_uk

@fcwilt the RRF-36 is shaped to mount on the rear of a nema 14

fcwilt

@jay_s_uk said in Duet3D announces new tool board at FormNext:

@fcwilt the RRF-36 is shaped to mount on the rear of a nema 14

There must be more to that. A NEMA 14 is square. The RRF-36 is not.

Frederick

jay_s_uk

@fcwilt round nema 14's aren't square... https://www.omc-stepperonline.com/round-nema-14-bipolar-0-9deg-8ncm-11-33oz-in-0-65a-36x20mm-4-wires-14hr08-0654s
they're now also the most popular type of motor to use on an extruder

fcwilt

@jay_s_uk

Well now it makes some sense.

Thanks.

Frederick