CETUS3D EXTENDED MODS
CETUS3D EXTENDED SOFTWARE
CETUS3D EXTENDED PLUS

I do a LOT of printing and the Cetus is my only printer I’ve been able to rely on. Direct printing to build surface without raft rarely works as it either doesnt lay a strong layer or starts to peel at a corner of the model, so I rely on rafts to get reliable prints and reduce waste.I want to get back to the early days of my printer where I could put ANY PLA filament in and and model and it just printed perfectly on the default PLA setting for weeks on end non stop.

CETUS3D EXTENDED SOFTWARE

I hope you can improve support building in your software and increase bottom layer thickness on models so they are stronger and dont delaminate as if they were the raft boundary. I do notice removing supports structures and raft especially can be difficult as they fuse to the model more than they should. But I’m not printing solid cubes all the time and need organic model prints and very complex single piece shapes.Plus even with the heated bed I need to use rafts to get good start layer adhesion but you can see here that is fine and it failed about 12mm up the support structures and none appear to have been bent over its all fairly solid. Where its a flat solid layer the print if typically reliable. Actually it seems that when the print fails its usually where the extrusion layer has lots of gaps in it, like a dense large area of supports or infill pattern. Its a complex and large model with a lot of support stalks needed. There are no other bubbles and no stringing obvious to me.

However see the following closeup of the failed print for a single “bubble” of filament that was on the print around the time it failed. The nozzle end had a bubble blob and the rubber cap had been pulled off during the print but that can occur with all sorts of problems. One other piece of the puzzle I just noticed with this last print is a bubble. Some of my failed nozzles that had the same issue, the dark filament one is a good carbon fiber filament.

CETUS3D EXTENDED PLUS

I have no way to film in place a closeup that shows what happens, plus i’ve already spent way too much trying to diagnose this problem. It may also be the molten plastic inside the nozzle isnt being extruded fast enough and on longer print sessions it builds up and overflows out the top causing the jamming blob. I’m thinking that the top of the steel part of the nozzle where the filament enters is accumulating too much heat and softening the filament before it enters causing it to buckle and form the blob which then prevents extrusion completely. So the problem is not a one off for me but a consistent problem. This is typical on other nozzles I’ve put aside too. See the following photo for the muffin top blob in place: Below is a closer photo showing this blob and you can easily see where the cog teeth grip thefilament hard trying to pull it through and where it strats to fail and just gring away at the filament. Originally I thought it may have been dust or particles clogging the extruder tip but I’ve noticed the past few months a regular “muffin-top” blob of plastic on top of the nozzle shaft, i usually have to cut this off to remove the nozzle to replace it and take off the extruder cover and clean plastic shavings from the cog. Sometimes if the print is small it’ll finish but larger prints or many prints it fails to extrude during the print resulting in the following: The print, until it stops extruding, is good and clean with no sign of thining extrusion or blobs/shears etc.

CETUS3D EXTENDED MODS

I have no mods on my machine except for a cable guide to keep the rainbow cable on top from getting lose or catching on the vertical rail and I’m using only the cetus software v2.2.28.44 on Windows 7 64bit.Anyway it usually prints well, when cleaned extruder cog and new nozzle installed and a well dried filament.

It just worked reliable but the past year it reliably clogs instead forcing me to replace the nozzle. I typically use the 0.4 nozzle, having never been able to get the 0.2 working, I use 0.6 when I run out of 0.4 nozzles.Initially me printer was bulletproof and printed well day after day, with any brand of filament,new and old. My printer is a Cetus3D Extended Mk II with heated bed and a GeckoTek Ez-Stick Hot surface. Reading others posts i’ve been having the same sort of problem as theirs and after trying all the suggests and spending enough on another printer replacing extruder several times and a ton of nozzle replacements too.

Cetus3d extended