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Awesome results with E3d Hot end.
Posted: Thu May 30, 2013 7:44 am
by daftscience
So i've been playing around with my printer for a while and have had off and on success with printing. I bought the new EZstruder and ended up getting a J-head nozzle (3mm that i converted to 1.75mm.) I was still getting a lot of issues with back pressure and stringing.
I don't know if this has been discussed, so if it has please ignore. But I feel like the two ptfe liners inside the hotend might be causing an issue. This is how i converted my J-head and I had the same issues with back pressure.
At any rate. I have the E3d all metal hotend and without any calibration at all it started printing perfectly (I did have the j-head with the same nozzle size calibrated before i started getting back pressure issues.)
I think I need to play with acceleration settings a bit, and increase my trimpot a bit if I want it to print much faster than that.
[youtube]
http://www.youtube.com/watch?v=ioomReGfhiM[/youtube]
Printing that felt like going from dot matrix to inkjet.
Re: Awesome results with E3d Hot end.
Posted: Thu May 30, 2013 8:13 am
by Flateric
Yup, many of us are loving the E3D all metal hotend. Nice purple cube gear you have going there BTW.
They seem to have sorted some initial minor issues they had and have it working great.
Re: Awesome results with E3d Hot end.
Posted: Thu May 30, 2013 11:33 am
by kbob
I like the idea of mounting the fan below the effector. I also like the idea of putting the fan in the back where it doesn't block the view.
Re: Awesome results with E3d Hot end.
Posted: Thu May 30, 2013 3:40 pm
by cambo3d
mind posting your current settings for this setup.? getting ready to install mine myself. once my mount is ready
Re: Awesome results with E3d Hot end.
Posted: Thu May 30, 2013 4:17 pm
by cpunches
I should have mine in a few days and would also appreciate any info you could post!
Re: Awesome results with E3d Hot end.
Posted: Thu May 30, 2013 5:19 pm
by Broose
Is that PLA or ABS that you are printing? Looks nice.
Re: Awesome results with E3d Hot end.
Posted: Fri May 31, 2013 1:58 am
by daftscience
cambo3d wrote:mind posting your current settings for this setup.? getting ready to install mine myself. once my mount is ready
cpunches wrote:I should have mine in a few days and would also appreciate any info you could post!
Sure, I'll post them when I get home in the AM.
Broose wrote:Is that PLA or ABS that you are printing? Looks nice.
Thanks. It's ABS. I'm blown away at how I really don't have to do any clean up after it's done printing.
kbob wrote:I like the idea of mounting the fan below the effector. I also like the idea of putting the fan in the back where it doesn't block the view.
I did that because it was the easiest at the time. But it's working out so I think it's going to stay that way.
Edit: Attached the files. I'm using the 100% infil settings in styles.ini and the Blue filament settings in materials.ini
Edit2: Straight up copy paste of settings.
_styles.ini
Code: Select all
[100% Infill]
layer_thickness_mm=0.25
extrusion_width_mm=0.5
num_loops=3
skin_thickness_mm=0.5
infill_extrusion_width=0.5
infill_density_denominator=2
stacked_layers=1
use_destring=1
use_wipe=0
loops_insideout=1
infill_st_oct_rnd=1
inset_surface_xy_mm=0
seam_jitter_degrees=0
seam_depth_scaler=1
_materials.ini
Code: Select all
[Blue]
g_code_matl=3B204D617962652073657420736F6D65206D6174657269616C2D737065636966696320472D636F64653F
fan_Z_mm=0
fan_loops_percent=35
fan_inside_percent=35
fan_cool_percent=35
temperature_C=235
keep_warm_C=175
first_layer_C=235
bed_C=110
sec_per_C_per_C=0.00681818
flow_min_mm3_per_s=0.5
flow_max_mm3_per_s=10
destring_suck=3
destring_prime=3
destring_min_mm=1.5
destring_trigger_mm=3
destring_speed_mm_per_s=65
Z_lift_mm=0.5
min_layer_time_s=3
wipe_mm=1
cost_per_cm3=0
flowrate_tweak=1
fiber_dia_mm=1.74
color=829440
Re: Awesome results with E3d Hot end.
Posted: Mon Jun 03, 2013 1:12 pm
by daftscience
Updated Video. I think this is 160mm/s. I'm printing a rambo mount that will hopefully push the air over the heatsinks I added.
Unfortunately, the quick retracts caused the teeth on my PTF connecter to break so i'm down until I can get some more. I do need to lower the acceleration. The solid infil at the beginning is a bit violent.
[youtube]
http://www.youtube.com/watch?v=WdYhwDoqHVo[/youtube]
Re: Awesome results with E3d Hot end.
Posted: Thu Jun 06, 2013 6:22 pm
by SanjayM
Awesome to see my hotend running that quickly! Delta bots can really crank out some speed. If you want to go faster but find that plastic isn't melting fast enough (When you hit 200mm/s true speed with thickish layers you might hit the top end) you can just crank the temp up. But expect the hotend will out-speed even a delta bot in most circumstances.
Glad to see you are getting along nicely with it - the low stringing and "neat" printing is something that was carefully engineered into the hotend, having a sharp thermal transition maintained by actively cooling with the fan means that you get really precise sharp and responsive extrusion (sharp when starting extrusion and stopping). This really helps with things like stringing and corner-blobbing or overextrusion. It also helps on bowden systems as it responds well to short retractions.
I'm so interested in optimising a hotend for bowden/delta machines that I'm actually building myself one now! It's going to be a bit kossel-like, but also take advantage of the fact that I have a CNC Lathe and a laser cutter to hand to speed up manufacture. It should also serve as a development test-bed for my multi-nozzle water cooled design. Fun times ahead.
If anyone has any questions about the E3D hotend then I shall do my best to hang around and answer questions.
Cheers,
Sanjay
Re: Awesome results with E3d Hot end.
Posted: Fri Jun 07, 2013 8:51 am
by daftscience
SanjayM wrote:Awesome to see my hotend running that quickly! Delta bots can really crank out some speed. If you want to go faster but find that plastic isn't melting fast enough (When you hit 200mm/s true speed with thickish layers you might hit the top end) you can just crank the temp up. But expect the hotend will out-speed even a delta bot in most circumstances.
Glad to see you are getting along nicely with it - the low stringing and "neat" printing is something that was carefully engineered into the hotend, having a sharp thermal transition maintained by actively cooling with the fan means that you get really precise sharp and responsive extrusion (sharp when starting extrusion and stopping). This really helps with things like stringing and corner-blobbing or overextrusion. It also helps on bowden systems as it responds well to short retractions.
I'm so interested in optimising a hotend for bowden/delta machines that I'm actually building myself one now! It's going to be a bit kossel-like, but also take advantage of the fact that I have a CNC Lathe and a laser cutter to hand to speed up manufacture. It should also serve as a development test-bed for my multi-nozzle water cooled design. Fun times ahead.
If anyone has any questions about the E3D hotend then I shall do my best to hang around and answer questions.
Cheers,
Sanjay
Thanks, Yeah my speed is in no way limited by the extruder. Basically, It's tweaking the acceleration so that I don't destroy my belts.
Re: Awesome results with E3d Hot end.
Posted: Fri Jun 07, 2013 1:23 pm
by Eaglezsoar
The settings that were posted, are they from Slic3r?
Re: Awesome results with E3d Hot end.
Posted: Fri Jun 07, 2013 1:42 pm
by daftscience
Eaglezsoar wrote:The settings that were posted, are they from Slic3r?
No, they're from KISSlicer
Re: Awesome results with E3d Hot end.
Posted: Fri Jun 28, 2013 5:17 pm
by SanjayM
Hi All,
Just a quick one as we are working way into the night shipping stuff.
To everyone that has a pending order with us:
Everything is shipping!
All orders made before June 11th have shipped. Everything else is shipping over the weekend, possibly Monday for some of the very recent orders.
Everyone is receiving the most up-to date hotend, which is effectively the v5 now. Many performance and ease of use tweaks have been done, but the fundamentals such as mounting dimensions, overall length etc (the things that matter for making it fit your machine) have remained identical. You will just be receiving a hotend that is lighter in weight, and has a somewhat improved thermal performance.
We hope to move to a permanent state of "shipping within 1-2 days of purchase" by the end of the week.
Concerning water cooled and multi-nozzle hotends
Because there seems to be a bit of speculation/confusion surrounding this I am going to let the cat out of the bag.
We have on the way a small prototype run of a 4 nozzled, water cooled, bowden fed hotends.
We are calling this new hotend
"Kraken" - A multi tentacled water borne monster!
The total footprint of the hotend is only 30*40mm in XY plane, the Z height from top to tip is under 40mm, and the 4 nozzles are arranged in a rectangle only 20mm*18mm apart. The weight without electronics looks to be around 110 grams, which is barely the weight of 2x E3Dv5 hotends. Each nozzle to have separate temperature control. Each nozzle can be individually levelled and adjusted in height to be planar with the bed in a very easy and quick way.
The small size and weight despite 4 nozzles is due mainly to the high efficiency of water cooling, even with only a tiny amount of water flow and a small cooling channel we still have a massive excess of cooling capacity. The second reason is a new way of mounting/gripping bowden tubes which has all the convenience and grip of pneumatic push-fit couplers, but with significantly less bulk and weight.
We intend to keep the price reasonable, and below the price for buying the equivalent number of E3Dv5.
But to be clear - Kraken is not a replacement for the normal v5 hotend, which will remain our main product that suits most users. The Kraken is designed purely for multi-nozzle bowden feed applications. Futhermore it is not finished! We will be shipping the majority of our beta prototyping run to trusted testers. I expect problems to occur and tweaks to be necessary. I will start a separate thread once things are ready, and the final version of Kraken will be developed in a public/interactive manner so the community can input what it wants/needs so that we can give you guys what you want.
Kraken will be open-source when sold publicly.
Cheers,
Sanjay
Re: Awesome results with E3d Hot end.
Posted: Fri Jun 28, 2013 6:40 pm
by daftscience
Wow. That sounds amazing! I had seen a mention of a water-cooled hotend. Too late to get in on the beta testing?!
Re: Awesome results with E3d Hot end.
Posted: Fri Jun 28, 2013 7:05 pm
by SanjayM
Nope not too late!
I think what we are going to do is ask for volunteers on the RepRap forums. Those that can prove they are ready to use a Kraken beta unit with photos of multiple ready to run extruders, electronics, mounting solution etc will be sent a free unit for evaluation on the understanding that they feedback their experiences/opinions on the forums. Once we have sent units to our trusted testers the remaining ones will probably be dished out to those who demonstrate the most ability to make use of, and provide feedback on a multi-nozzle setup.
Having learned from the release of the E3Dv4 I think it is vital to have some community input in the development stages so that we can get the hotend to be exactly what the users want. As soon as I am happy with the whole shebang and have a finalised design we will take pre-orders and start manufacture.
I'll do my best to drop in here and let you guys know as things develop. Bowden fed delta machines are really our target market with this product.
Sanjay