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by ominix
Wed Feb 01, 2017 10:42 am
Forum: General Discussion and Tips
Topic: Anyway to disable "Excessive Bed Temperature" Warning?
Replies: 4
Views: 764

Anyway to disable "Excessive Bed Temperature" Warning?

Hi,

Is there a way to disable that annoying "Excessive Bed Temperature" Warning? or at least set the threshold to something more than 150°C. I'm printing Acetal/POM and frequently use a bed temperature of about 160°C

Thanks,
David.
by ominix
Wed Mar 23, 2016 2:04 pm
Forum: Feature Requests
Topic: Add accel and jerk settings for accurate build time calc.
Replies: 35
Views: 16080

Re: Add accel and jerk settings for accurate build time calc

I was using a jerk of 30 on my printers. For reference, Marlin defaults to jerk 20 and XY accel 3000 https://github.com/MarlinFirmware/Marlin/blob/RC/Marlin/Configuration.h#L592 Repetier also uses jerk 20 and XY accel 3000 by default https://github.com/repetier/Repetier-Firmware/blob/master/src/Ard...
by ominix
Tue Mar 22, 2016 4:33 pm
Forum: Feature Requests
Topic: Add accel and jerk settings for accurate build time calc.
Replies: 35
Views: 16080

Re: Add accel and jerk settings for accurate build time calc

Thanks for the extra detail. I checked on a few of my printers, and most of them use a jerk settings of around 30 with XY accelerations around 4000 mm/s. So pretty much all my printers seem to have jerk/accel settings that are 4-5x faster than the ones you mentioned. Seems like stock Marlin firmwar...
by ominix
Mon Mar 21, 2016 4:18 pm
Forum: Feature Requests
Topic: Add accel and jerk settings for accurate build time calc.
Replies: 35
Views: 16080

Re: Add accel and jerk settings for accurate build time calc

So I'll try to help out a bit with some rusty physics ;) The simple 1D kinematic equation for distance including jerk is: s = vi*t + (1/2)*ai*(t^2) + (1/6)*j*(t^3) where s = distance traveled, vi = initial velocity, ai = initial acceleration, j = jerk (i.e. rate of change of acceleration), and t = ...
by ominix
Mon Mar 21, 2016 7:31 am
Forum: Feature Requests
Topic: Add accel and jerk settings for accurate build time calc.
Replies: 35
Views: 16080

Add accel and jerk settings for accurate build time calc.

Hi, Actual Build time is always way off what is estimated, sometimes as much as the double as estimated. The cause is that the calculation is done on linear print speed not counting any acceleration or jerk. For a print where there are many small segments this becomes very off reality. Could you add...
by ominix
Sun Mar 06, 2016 11:31 am
Forum: Feature Requests
Topic: Retract while coast / un-retract while move
Replies: 5
Views: 968

Retract while coast / un-retract while move

I'm having a hard time to get rid of blobs at layer change (due to the pause it makes), wiping and doing a retract while wipe does improve it a little, but it's still not perfect, and wipe will create some visible damage to some pieces. 2 greate features would be: - Retract while coast - And un-retr...

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