This topic contains 7 replies, has 5 voices, and was last updated by 
hagster 11 months ago.
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I just read a little about bed heatup times on some of our competitor 3D printers and got some surprises.
looks like people are impressed with their 7 min heatup time while some are quoting over 25 mins!!!
- Da Vinci 10 mins to 115°C. 30 mins to 130°C!
- Afinia H480 25 mins to 100°C!
- Ultimaker 2 and Original 10mins to 100°C
- Robox under 3 mins to get to 130°C.
Does anyone know heatup times on other printers?
I think you are on to something here Pete.
It’s probably hard to get firm figures on this as it depends so much on ambient temperature and drafts etc. A bit of googling seems to come up with similar figures to the ones you suggest, but these figures mostly from peoples complaints. I guess there must be some brands that people are happy with. There are lots of stories of using arctic paste or laying towels over the bed and similar to speed it up. Lot’s of printers never get to 100°C.
Apparently the Up Mini needs an hour to pre-heat. Hence this kickstarter
https://www.kickstarter.com/projects/1645756411/up-mini-bed?ref=nav_searchThe other side to the issue is power consumption. How much energy do you waste by 1)having an overly long pre-heat time, 2) not having an enclosure to minimise heat loss.
The other thing that matters is how even the temperature profile accross the platform.
http://sd3d.com/not-all-heated-beds-are-created-equal/
How does Robox do in this regard?
as a hobbyist I care mostly for quality and stability.
java (EE), JavaFX, HTML, GIS) programmer, database wizard, framework inventor, looking for a job ! http://roboxing.com/wizards
Robox can use 450W during heatup, this includes the head and other electronics but most of it is the bed. Maintaining 130°C during a print the draw is around 220W.
I guess you all know that the bed heater on Robox is AC while the head heater and other electronics run on DC power.
The bed heater on the Robox is unmatched IMHO.
Let away its heating speed, few can reach 160 degrees.
My Robo3D takes about 3 and 1/2 minutes to get to 80c.
Terry Taylor
The higher the temperature, the harder to get to it: it’s not a linear ramp, it’s an exponential rise.
So comparisons between 3D printers’ beds should be made at the same temperature (e.g. from 70C to 80C) to be meaningful, and this would show even more the superiority of the AC heater used in the bed of the Robox.
There are lots of confounding factors here. Ambient temperature, humidity, drafts, bed materials, stick on tape etc, enclosures.
This would be a good shootoff if anyone goes to a meet up. But be sure to take a separate method of measuring the temperature, because I don’t trust the ones built in.
Really the big things that determine this is the wattage of the heater and the size of the bed.
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