formbot troodon 400 with spider v1 board and klipper
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Hi Guys i would really appreciate your support, i installed a spyder v1 board and klipper on my troodon 400 direct drive with mellow brushless air blower. I am currently printing at 400 speed with pretty good quality however when i bump the speed up to 700 the quality starts to get bad and some wierd holes show as seen in the attached picture. I can assure that the cooling is enough as this blower is soo powerful and input shaping has also been configured. Any ideas on what can cause this? also does any one have this printer with klipper can share his printer.cfg to compare to mine! The benchy on the left is printed with speed 700 and the one on the right is printed with 400 speed.IMG_0356.jpg
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i installed a spyder v1 board and klipper on my troodon 400
So you think the Duet/RRF forum is the right place to ask? Nevertheless, looking at your photos, here’s my advice: the faster you print, the worse is the result. That’s fairly obvious.
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@Herve_Smith No, I think he has switched to Klipper some time ago after - I assume - some disappointing encounter with RRF.
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@UnknowX you may be outrunning your hotends maximum flow rate.
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My apologies i had actually RRF installed and then changed board and software. I didnt know where else to post this. My hot-end is a takoto and capable of these speeds.
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undefined Phaedrux moved this topic from Firmware installation
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I didnt know where else to post this.
Don’t worry. Obviously, you can’t expect klipper-specific advice from this forum, but maybe some common wisdom may do.
My hot-end is a takoto and capable of these speeds.
Possibly, yes. But especially for high speed printing, you have to tune the system as a whole: mechanics, electronics, temperatures, firmware…
My approach is to start with very low speed, without PA, mesh bed compensation or other optimisations, in order to adjust temperatures (bed & extruder) and check the mechanics. If I get a good first layer, layer adhesion and geometry are right, I speed up until I encounter new problems: blobs, artefacts, stringing, over- or under extrusion…
Depending on what you get, stay at that speed for a while and fix the problems - this requires to play with some settings like hotend temperatures, feed rates or PA. If the print finally looks right, increase speed… up to the next inconsistencies. Fix those, then increase speed again. It’s a time consuming, iterative approach, but I think that’s the way to go.
EDIT: forgot to mention accel. settings: to begin with, use conservative values for X and Y, too. If edges of a print start looking weird, try lower acceleration values.
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@UnknowX said in formbot troodon 400 with spider v1 board and klipper:
.......................... My hot-end is a takoto and capable of these speeds.
I guess "pretty good quality" is a subjective thing - it's not the phrase I would use to describe the attached images. That aside, it would be interesting to see a video of the machine printing at 700mm/sec. But assuming for a moment that you can move the print head at such speeds, in order to attain that speed, you'll need very high accelerations - especially with the short moves on an object such as that toy boat. Whilst it is possible to accelerate a print head in 3D space at such accelerations, it is highly unlikely that the flow rate of the highly viscous molten filament being forced through a small orifice can be accelerated at the same rate as the print head. It's basic physics and no amount of tuning or tweaking is going to fix it.
