Topics created by Threepwood

I have the same issue on ToolChanger machine too. I haven't found out the root cause yet.

@gloomyandy I hadn't noticed he was printing at 0.1mm layer height. I suppose that will help a bit with getting consistent extrusion since he's only having to get to 30mm³/s rather than 60mm³/s (I'm asuming 0.5mm width). But still he seems able to print each of the holes very cleanly even though he's going from retration to 30mm³/s with an acceleration of 35,000mm/s² and a jerk of 30 (or 1800 in RRF language).

My point was just that it does seem he is able to get the extruder to keep up with incredible acceleration and that, in my opinion, it's not pointless to reduce X carriage and printhead weight.

I'm still on a 24v system and 2 motors, whereas Vez is using 4 motors and 48v, so I won't be hitting the speeds he's getting. I seem to be able to get decent results with 200mm/s outer walls, 250mm/s inner walls at 4000mm/s² acceleration and 300mm/s, 10,000mm/s² acceleration for infill. All at 1200 jerk and 0.2mm layer height. Weirdly 600 jerk was causing the ringing in low poly curves to be much worse.

I did try going back over to 3.5.0-rc.1 just to test if the input shaping changes would improve the low poly curve banding, but the result was identical.

@deckingman In my case, I designed the duct myself for my custom printhead. I ran CFD on it, so I'm happy with where the air is directed. But the CPAP fan at full speed is in another league compared to normal part cooling fans, so there is only so much "containment" of air flow we can do. See the first 15 seconds of Vez3D's video on it. https://youtu.be/E3kBau82SwU?si=skFc90h_gz5UPpWB

He is running his at amazingly high speeds, and even uses extra blowers that direct air from the sides of the print area, which he needs for the high speeds he is running. See this video, it's absolutely astonishing. https://youtu.be/hcMxEkVvIdE?si=Zz3FRlIIbShGoVR1&t=580

So I don't think there is any other option than to use these high powered fans.

I'm running things a bit slower, so I don't need the full power at the moment. But it's nice to know it's there if I do, or if I decide I want to print PLA.

Thankfully the there's no aluminum in the hotend, it's full copper and nichrome. Although the silicone sock would be problematic. The heatbreak is water cooled, so as long as the pump doesn't stop at the same time, the aluminium above the heatbreak wouldn't melt.

@Threepwood It's been a while, when I worked with curve discussion.
My take on this is: you have to adjust the coordinates (y-axis) to be zero where the highest speed without underextrusion is.
Otherwise you'll always see underextrusion where it should be perfect.

example: from 1-3mm/s no underextrusion
put the value for 4mm/s in the first line of the spreadsheet ; 5mm/s in the second and so forth

The resulting curve will have no correction at 3mm/s.
Then switch off the extrusion correction below 3mm (macro, daemon.g? )

@threepwood
Look for Epoxy Casting/Sealing Resin.
Or use CA-Glue.

How to Carbon Fiber Prep and Seal with CA Glue - Video

How to cut Carbon Fiber Sheets and Carbon Fiber Parts and seal the cut edges - Video

@mrehorstdmd I wouldn't recommend it unless you're like me and just enjoy taking things apart and are confident doing it. After using it as a fidget toy for a while, it's now much smoother than before. It might help that I haven't overlubed them this time.

I bought a high preload MGN12 for my X rail to replace my MGN9s, because the only obvious flex in my Voron is the X carriage being able to be twisted up and down. I think this is more due to the printed parts flexing on the small MGN9 carriage, the wider MGN12 should improve things a bit but I've also ordered a aluminium machined parts that sit between the MGN12 carriage and printed hot end and extruder parts.

I think it would have been better to incorporate wider MGN12 carriages for the Voron for this reason, but they may be harder to source at a reasonable price.

I'm using E3D "Super Whopper" motors, and they give me more torque than I will ever need!

@sindarius Ooh, that is effectively the same thing, I just didn't find it. I just tried it on a simulated print and it looks really cool. 😁

In the next release I think it would be nice to have an option next to "Progress color" such as "Apply to all completed layers", if it's not too difficult to implement.

@phaedrux You make a good point. I was being lazy and keeping the whole line, and only changing the Z dive height, instead of finding out what values are optional in a M558 command.

@threepwood .... woooo hoooooo ! 🙂👍 👍 👍