Need Help | Print Speeds and Hotend

Controllers Smoothie
1

My Printer:
Delta 3D Printer
530mm Print Height
200mm Print Diameter
3/8" Screw Drive System
Nema 17 Motors
Stock Smoothieboard Stepper Drivers

Print Speeds:
I have set my max print speed to 30,000 mm/min or 500 mm/s. When printing my parts, I never see a difference between printing 100~300 mm/s. Why is this so? I know that those are high printing speeds but it still isn’t a reason to not being able to set those speeds.
My homing speed is set to 10 mm/s, if I try a speed any higher than that the motors will jam and just make a noise when trying to home. Why is this so?

Hot End:
I have a E3D V6 J-Head Clone from eBay, obviously not the best but it works. For whatever reason I am having lots of trouble getting my PID settings set nicely. My hotend takes a long time to heat up. For example when trying to heat up to 240 Celcius it can take up to 8 minutes, and when I turn on a fan to blow at the print, the hot end will drop down to 205 Celcius. I have tried the PID Autotune many times already. Any recommendations on what to do?

I’m looking forward to hearing feedback!
Thanks!

-Helipad14399

Imported from wikidot

2

The reason why you don’t see a difference is that acceleration is too low so it can never accelerate to full speed.

Cheers.

3

That makes sense. Can I use this to set my new acceleratioin?

M201 x1000000 y1000000 z 1000000
M202 x1000000 y1000000 z1000000
M500

Thanks

4

I recommend you set it in the config file.
If you are using a config-override, then yes you have to use that.

5

Great thanks!

I’ll try out the new acceleration and see how it goes.

What are your thoughts on my issues with the hotend?