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SoliForum - 3D Printing Community → Filastruder → diameter fluctuations
Hello all,
I work at the moment with a Filastruder with a nozzle diameter 3.
Temperature between 160 ° C-180 ° C.
Material ABS Teruran GP35
The extruder is about to 180 centimeters in height and the material extrudert then down.
Now I have diameter variations between ø 2.20 mm ø3mm. This is too much.
Wodran can I still work?
I hope I get some tips from the experts here.
Nice Greetings
No experience with GP35, that could be part of the issue. Can you post some pictures of your setup? Typically diameter variations with 3mm ABS filament are +/-0.10mm, worst case.
ABS GP35 would be very good to extrude.
Maybe it could be due to material flow.
When the water bottle it from time to time increased.
With what temperature you are working with ABS?
I can only show them a video.
Here is the link.
I can not insert a link
I extrude ABS at 180-190C, I am surprised it even extrudes at 160C.
It was hard to tell since the video was rotated, but it looks like there's three possible issues:
- The kapton tape may be shielding the filament from getting cooled effectively.
- The filament guide isn't in the right place.
- The filament doesn't have a free fall to the floor - it looks like it can hit things on the way down.
On top of that, I have no experience with GP35, so I am not an expert on how it would behave. Typically though, diameter variations are due to insufficient cooling or lack of an unobstructed area for the filament to fall into.
I'm fine tuning my setup and the batch I did last night seems to have come out fairly consistently at 1.4mm .. I'm using the OS MG94 pellets and the red masterbatch at a ratio of 10/1. The extruder temp was set to 200. I also installed the the nozzle with the debris mesh in it. Should I go up in temp?
I suppose it might not be getting cooled fast enough?
I was able to print with the 1.4mm diameter filament and it looks great. But I'd of course rather get closer to the spec of my printer.
200 is way too hot, that's why you're seeing that diameter. You need 175-185C, as listed in the manual (step 2, operation instructions). The alternative is to drill the nozzle bigger.
Every 10C is a ~0.1mm reduction in diameter. 180C should bring you to 1.65 or so. I drill the nozzles aiming for 1.70mm filament - better to be undersized slightly than over.
200 is way too hot, that's why you're seeing that diameter. You need 175-185C, as listed in the manual (step 2, operation instructions). The alternative is to drill the nozzle bigger.
Every 10C is a ~0.1mm reduction in diameter. 180C should bring you to 1.65 or so. I drill the nozzles aiming for 1.70mm filament - better to be undersized slightly than over.
Okay.. I recall being confused about that but I can't get the manual at the moment. (dropbox is blocked where I work)
The first batch of color I tried to make came out really streaky so I changed the ratio and had somehow decided that a higher temp would help mix the pigment.
Higher temp probably would help mix, but it would also show the diameter reduction you see.
The trouble with streaking comes from masterbatch pellet size relative to extruder size. If you can run the pellets through a burr grinder or something, they'll mix better.
Higher temp probably would help mix, but it would also show the diameter reduction you see.
The trouble with streaking comes from masterbatch pellet size relative to extruder size. If you can run the pellets through a burr grinder or something, they'll mix better.
Are there any specific models of burr grinders that are known to be up to the task? These are usually used for coffee right?
I'm also going to try using powered pigment and cut out a step?
I just grabbed a $25 one off Amazon.
Check out this thread before trying powders:
http://www.soliforum.com/topic/2123/col … ch/page/5/
(post 120+)
Every 10C is a ~0.1mm reduction in diameter. 180C should bring you to 1.65 or so. I drill the nozzles aiming for 1.70mm filament - better to be undersized slightly than over.
Well I've been lowering the temp in steps and I'm down to 160 and it's still only 1.60 and it's extruding really slow
Are you using MG94?
Sounds like the solution is to drill the nozzle one size larger.
Are you using MG94?
Sounds like the solution is to drill the nozzle one size larger.
Yes, what size should I be aiming for? Do I need a drill press for this?
Hand drill is fine. They're 1/16" (1.58mm) holes, so you could jump to 5/64" (1.98mm), which might be okay if you bump the temperature back up to ~195C. Or you could get a metric 1.70mm bit. Or a #50 bit (1.778mm):
http://www.amazon.com/Cobalt-Jobber-Len … +drill+bit
If you're using a melt filter nozzle, you'll want to either remove the filter, or be very careful about how deep you drill.
When I started out, I was worried about oversize filament - MFI and temperature can both impact diameter. However, most users report 1.6-1.75mm, so I will probably bump it up a size in the future.
If you're using a melt filter nozzle, you'll want to either remove the filter, or be very careful about how deep you drill.
Yeah I was planning on removing it from the extruder first so it'd be easier to drill. But drilling it out in place is tempting because it's not fun getting the nozzle off after it's been used. lol
I just grabbed a $25 one off Amazon.
well I already killed the burr grinder I got off of amazon.. I probably ran it too much in too short of an amount of time. It was the Cuisinart DBM-8 Supreme Grind Automatic Burr Mill. It did do a decent job of grinding the filament but I guess you can only run it for short bursts.
Ah - yeah, I used a manual one, so I could feel the resistance and not burn out a motor or break it. I was only doing a teaspoon of masterbatch so it wasn't bad.
Ah - yeah, I used a manual one,
Yea.. which one?
SoliForum - 3D Printing Community → Filastruder → diameter fluctuations
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