steps for ex struder

[bplemmons]

Do I need to change the steps for the new ez struder from the steve one?

[Broose]

Yes. Its somewhere near to 100.

[bplemmons]

just found it... 92.65

[foshon]

92.68 for me same thing

[geneb]

Split the difference and go with 92.665.

g.

[cpunches]

I finally got around to mounting my ez-struder last night and was amazed to discover that 92.65 (from the new manual) was exactly right! really liking the ez-struder.

[daftscience]

Strange. I'm going to try this and see what happens but I got around 50mm/s. Is this because you guys are all using the newer rambo with micro stepping?

Edit: Actually, I don't think that math works out. I've been up all night and my brain can't math right now.

[Polygonhell]

I'm using 44 on a RAMBO 1.0 obviously 8x vs 16x uStepping.

[daftscience]

I'm using 44 on a RAMBO 1.0 obviously 8x vs 16x uStepping.

Ok thanks. I'm on 1.0 also. So my initial thought was correct then. I might not know what µStepping is. I thought 16x meant it took twice as many steps per revolution as 8x. Which makes me think there are more mm/step in an 8x than there are in a 16x.

[Eaglezsoar]

I'm using 44 on a RAMBO 1.0 obviously 8x vs 16x uStepping.

Ok thanks. I'm on 1.0 also. So my initial thought was correct then. I might not know what µStepping is. I thought 16x meant it took twice as many steps per revolution as 8x. Which makes me think there are more mm/step in an 8x than there are in a 16x.

I look at it this way, If you are using 8x microstepping then to make 100 rotations the stepper would have to make 800 microsteps
the same stepper using 16x microstepping would have to make 1600 microsteps to make 100 revolutions. You can see the 8x microstepping mode is exactly one half of the 16x microstep mode.
I hope this make sense.

[Jimustanguitar]

Is anyone experiencing a resolution problem? I don't suspect that the average user would notice, but a buddy of mine is printing with the .35mm nozzle and doing .07mm layers. With his (gear reduction) Steve's extruder, the motor barely looks like it's turning. I can only imagine that by using 100ish steps per mm instead of 600ish, the steps could almost cause a jerky extrusion or a dotted line effect on very very small extrusions.

[Polygonhell]

Is anyone experiencing a resolution problem? I don't suspect that the average user would notice, but a buddy of mine is printing with the .35mm nozzle and doing .07mm layers. With his (gear reduction) Steve's extruder, the motor barely looks like it's turning. I can only imagine that by using 100ish steps per mm instead of 600ish, the steps could almost cause a jerky extrusion or a dotted line effect on very very small extrusions.

It can be an issue with 3mm filament and direct drive extruders, where the extrusion rate is 1/3 that of 1.75mm, but it doesn't work as you'd expect, because what's actually pushing the filament out is the pressure in the nozzle, all that adding filament is doing is trying to keep that pressure constant. Because of the hysteresis in the pressure change it's generally not an issue until you get to extreme cases.

If you do get extrusion issues the usual fix is to increase speeds as layer thickness decreases, which often means increasing temperature, people on the reprap IRC channel commonly print <0.05mm layer height with 3mm filament on 3:1 extruders, so I doubt it's much of an issue.

[daftscience]

I'm using 44 on a RAMBO 1.0 obviously 8x vs 16x uStepping.

Ok thanks. I'm on 1.0 also. So my initial thought was correct then. I might not know what µStepping is. I thought 16x meant it took twice as many steps per revolution as 8x. Which makes me think there are more mm/step in an 8x than there are in a 16x.

I look at it this way, If you are using 8x microstepping then to make 100 rotations the stepper would have to make 800 microsteps
the same stepper using 16x microstepping would have to make 1600 microsteps to make 100 revolutions. You can see the 8x microstepping mode is exactly one half of the 16x microstep mode.
I hope this make sense.

Hahah, well if you put that it makes perfect sense.

[chrishamm]

just did my extruder today and it was 48 steps per 1mm on the Rambo 1.0e

[hakanai]

92.67 for me. The ez extruder is definitely living up to it's name, prints have been much better since the upgrade

[Lewisgard]

I just got done upgrading to the new repetier firmware and now my extruder doesn't feed fast enough. And by that I mean, I see little specs of ABS on the table by the time I get the second layer going. it's about the same way for most of the layers. I checked my steps per mm and I'm running at 92.4. Every thing else is looking good.
Any Ideas?

[RichW]

I noticed a similar condition with the EZstruder when I switched. In my case it was a clogged hot end. ABS was stuck to the lower 3/8 " of the PTFE tube. The use of 235C heat caused the teflon to shrink and harden. I am also seeing a large change in the temperature when the bed cooling fan is switched on or off. I replaced the liner to get printing again and then removed the ABS block from the old tube. I then used a 2mm drill to open the liner back up. If the new liner plugs up, I will try the old one again. I'm thinking the smaller OD at the hot end and the hardened material may work better. Regards, RichW

[Flateric]

Easier to load, easier to use, less jams, more accessable.

Now the bad.

Tends to be very easily "kicked back" or exhibit "skipping" due to being a direct drive.

These may or may not occur for you unless you are printing with more difficult materials such as polycarb, and nylon or high impact crystal ABS.

The old extruder definitely had more torque and power. But had more issues.