Core One L launch  

RE: Core One L launch

Um, Someone in Prusa please proof read the announcements.
If the core one was truely 0.95M3, I would be buying one now. I think they mean cubic feet, not cubic meters in the chart. Unless my math teacher taught us wrong.

Also I have been logged in and have tried 3 browsers, windows and apple based OS and I cannot reply or add comments to the blog. Neither can I get the video to work. Keeps asking for me to set cookies, over and over and over, even logged in and re-opening the page. I guess the web group is not ISO certified yet.

All the above aside, the Core 1L seems to be targeted to top end hobbyists and business use. I hope the heat bed will be an available option on the Core One. Serial vs. Parallel wiring to switch from 220 to 110 v is a good design. Higher voltage means about 1/5th the amperage needed, or smaller wires.

Need to see how the aluminum plate is mounted to account for the growth during heating. A 90C change from room to 110 could cause the aluminum plate to grow to 306.2 mm. Cast aluminum maybe a little less, but not much.

One question I do have, is it the same buddy board, or a new controller to support the advanced options and new heatbed? There must be a relay for the AC power switch somewhere.

RE: Core One L launch

Why is an AC bed beneficial?  Less energy through the PSU?

RE: Core One L launch

Posted by: @milehigh3der

Why is an AC bed beneficial?  Less energy through the PSU?

Yes, a PSU is expensive in $/W for several reasons, where AC is just an inexpensive Triac circuit.

Implicitly it translates into "higher power", let's hope that "translation" is correct. 

RE:

> One question I do have, is it the same buddy board, or a new controller to support the advanced options and new heatbed? There must be a relay for the AC power switch somewhere.

It is a new board for the printer and a new section to control the heat bed.

> I hope the heat bed will be an available option on the Core One. Serial vs. Parallel wiring to switch from 220 to 110 v is a good design. Higher voltage means about 1/5th the amperage needed, or smaller wires.

On reddit there was a note that it may be considered for future Core One S or as an upgrade, but because  of the electronics and requirements for the 110V it will be a quite expensive upgrade, if ever.

One more thing, there wont be an upgrade kit from Core One to Core One L, because effectively it is so many parts it is effectively a new printer.

RE:

A separately shipped upgrade would need to overcome a few obstacles that aren't immediately obvious: 

User-installed mains voltage wiring is problematic. I could see a custom PSU / temperature control module with "no user serviceable parts inside" having a C13/C14 connector to the hotplate (example for outlets in a device can be found on old PC power supplies or stage lighting equipment) but they are rated for fairly low pin temperature. It would need a high-temperature cable with the (small) low temperature connector and a bunch of lawyers familiar with IEC60320. Alternatively, higher-temperature versions like C15 but size is getting out of hand quickly. This would look like a 1960 waffle iron...

Just thinking aloud, not an expert on such things.

RE: Core One L launch

My realistic point of view as a long time prusa fanboy - i see some pros, but sadly much more cons. 

Pros:

Good build volume

Faster and better heating of the bed

Heated Chamber

Cons:

Only 290c nozzle temp?! I dont get why they still stick to this (bye bye PA6, PPA, PPS and layer adhesion). They could make this as an entry "engineering" filament printer - so the enclosure and heated chamber would make finally sense. 

THE PRICE. Realistically it should be 40-50% cheaper to be competitive. The H2S is even CHEAPER than the little core one and is better in every way.

No good solution for multimaterial printing

It makes me sad. I dont know if Prusa can survive this competition.