What is my speed limit?
-
What dc42 said is correct. Also note the limitation on a hotend is not linear speed, but volumetric rate. 60mm/sec at 0.8mm wide 0.5mm high layers is harder for a hotend than 0.4mm wide 0.2mm high layers at 100mm/sec.
-
Thanks guys.
I will just be happy with what I have. I always thought I could print faster on my old Prusa clone if I could just get the frame tighter. I always worried it was going to detonate if I pushed it above 60mm/s, so I thought that was the only limitation.
I built the new machine that was more structurally sound with delusions of doubling my print speed, not knowing that I would've run into this same problem with the clone if I could've gotten it any faster.
SO compared to what I have been used to, 60mm/s is quite an improvement.I have read about the Volcano hotend and I think it was meant for other things that what I would print.
I like high resolution and fine finishes. And my V6 gives me that.So with this knowledge, I'll just concentrate on other things and see where I can squeeze a bit more quality out of it from here and there.
As always, thank you all for the help.
-
Er, sorry but I couldn't resist the temptation to jump in here https://somei3deas.wordpress.com/2017/06/22/exploration-of-print-speeds-with-a-diamond-hot-end/ and https://somei3deas.wordpress.com/2017/06/25/duet-pressure-advance-experiments/
@Scottbg1 are you using a print cooling fan? That can screw things up especially if air is being blown directly at the nozzle.
-
The e3d socks are one of two designs one which leaves most of the nozzle protruding, these work, the nozzle gets gunked up but the heater block stay shiny. And the type with just the nozzle tip poking out, these don't work, nice idea but filament find its way in between the nozzle and and the sock.
Volcano can print slow and accurate or fast but not as quick with large nozzles as you might expect, you lose a little z height but gain IMO a better heat exchanger to heat your filament.
Used with aero extruder and the z height issue is taken care of.
-
That was one of the first things I did was play with my cooling fan. I have it down to 10%.
Completely off and the print begins to fail.Those are interesting reads and coincidentally I just discovered pressure advance last night.
I enabled it in config.g but didn't get a chance to test it because it was getting late. I plan to play around with it tonight. Thank you for the info!
The second article definitely gave me insight on what to look for!I meant to mention this to you in my last post, but I had modified the last sock I used by cutting the nozzle hole to a larger diameter and it seemed to work great. I hadn't tried it in this printer yet because I didn't think I needed it.
I only used them on my old clone because of temperature fluctuation but it's rock solid without it on this printer.I want to visit the volcano since I have a block and nozzles in my parts bin. But I'll have to make a new carriage since I just modified it to carry the IR sensor I mentioned earlier. Adding the height of the volcano will make the sensor useless, the way I have it mounted.
I really want to see what benefits pressure advance brings.
Thank you all so much!
-
E3D has a new version of the sock, which looks better: http://e3d-online.com/E3D-v6/Spares/V6-Sock-Kit-3-Pack
Ordered some of them to try. But yeah, had the same problem as you with the old version.I'm also stuck at 60mm/s (0.2LH with 0.4 nozzle, with bowden), beyond, my extruder is skipping. I can go faster but only at 0.1LH
Socks help when you've got cooling fan for PLA, but no so much, after its the limit of the E3D heatblock. When you've got a rigid frame and an high speed printer, volcano will do the trick, seen it on my friend's printer. 0.4 nozzle are available too for volcano so you'll keep your resolution (currently waiting for mine). Large nozzle and large heat block will let you print quicker.
-
It's all about how fast you can melt filament in terms of mm^3/sec so a large nozzle with a greater area will actually reduce the maximum possible print speed.
-
Head speed is lower as you said, but you can max the melt rate of the volcano block and lay down more filament per unit time, with a large nozzle rather a 0.4mm. Plus big parts printed with big extrusion lines are stronger.
-
You just upped my interest in the Volcano. I didn't look hard for other nozzles. I only saw what they offered in the kit that they sell. And I believe that .05 is the smallest they offer in that. If they offer a .04 I will order one right now.
Please let me know how yours turns out. -
You just upped my interest in the Volcano. I didn't look hard for other nozzles. I only saw what they offered in the kit that they sell. And I believe that .05 is the smallest they offer in that. If they offer a .04 I will order one right now.
Please let me know how yours turns out.I've asked E3D because their descriptions pages are always outdated. The starter pack comes with a 0.8 and the eruption pack comes with the all set from 0.6, the 0.4 is an optional nozzle out of any pack.
-
You can get a clone nozzle in almost any size.
-
Personally I would pair the second sock that nozzle is protruding with a copper heat block and copper nozzle. The copper nozzle doesnt stick to filaments like PLA and ABS… it starts gunking up with stuff like igus iglidur etc though.
Thanks for the tip on new sock design, i gave up on them due to the filament and nozzle oozing up.
Scott, have you tried elmoret's recommendation .4 layer width and .2 layer height? The default settings of a slicers layer width will naturally slow down how fast you can print.
I run a 40w heater with copper block and nozzle without a sock and have no issues printing 60mm/s parimeters with above layer settings.
-
Forgot to add the nozzle tip design is easily modified to the better design with a craft knife.
-
Scott, have you tried elmoret's recommendation .4 layer width and .2 layer height? The default settings of a slicers layer width will naturally slow down how fast you can print.
I run a 40w heater with copper block and nozzle without a sock and have no issues printing 60mm/s parimeters with above layer settings.
No I haven't. And in truth I didn't know you could control the two separately.
I just tried googling how to adjust the layer width in S3D throughout the print and I didn't find anything definitive.
But I did find a couple of hints and I have formulated a guess and I am hoping you can confirm if I am right.You would control the parameter and infill width by the parameter outline count. Meaning, if printing at 0.2 layer height and setting 2 parameter outlines. Correct?
That parameter outline setting dictates the infill width if I read it correctly.
How would that effect resolution? Or would it at all?
If I have this figured right, adjusting to these layer settings wouldn't necessarily increase print speed, but decrease print time.I hope you tell me that I figured it out correctly, because I am feeling like a 3D Printing Master right now.
I spent a few minutes last night cutting out the holes in some extra socks that I have, with a pair of wire snips. They're not pretty but it's all about function over fashion, right?
I really do appreciate everyone's help.
Maybe one of these days I'll take a trip to England and I'll buy you all a beer. You guys drink that dark beer with STUFF floating around in the bottom of the glass, I think.
Or you all could come to South Alabama, USA and I could introduce you to sweet iced tea and grits. -
I drink more or less any type of beer
-
Scott, have you tried elmoret's recommendation .4 layer width and .2 layer height? The default settings of a slicers layer width will naturally slow down how fast you can print.
I run a 40w heater with copper block and nozzle without a sock and have no issues printing 60mm/s parimeters with above layer settings.
No I haven't. And in truth I didn't know you could control the two separately.
I just tried googling how to adjust the layer width in S3D throughout the print and I didn't find anything definitive.
But I did find a couple of hints and I have formulated a guess and I am hoping you can confirm if I am right.You would control the parameter and infill width by the parameter outline count. Meaning, if printing at 0.2 layer height and setting 2 parameter outlines. Correct?
That parameter outline setting dictates the infill width if I read it correctly.
How would that effect resolution? Or would it at all?
If I have this figured right, adjusting to these layer settings wouldn't necessarily increase print speed, but decrease print time.I hope you tell me that I figured it out correctly, because I am feeling like a 3D Printing Master right now.
I spent a few minutes last night cutting out the holes in some extra socks that I have, with a pair of wire snips. They're not pretty but it's all about function over fashion, right?
I really do appreciate everyone's help.
Maybe one of these days I'll take a trip to England and I'll buy you all a beer. You guys drink that dark beer with STUFF floating around in the bottom of the glass, I think.
Or you all could come to South Alabama, USA and I could introduce you to sweet iced tea and grits.
S3D might default that to something else.
Normal place to change layer height.
-
Exactly what he posted in the images, extrusion width is the layer width, setting that to manual (s3d defaults to auto) and setting it to .4 width then setting layer height to .2 will give you better results.
As a rule of thumb i use extrusion width to match nozzle size so if you had a .35 nozzle then you would set .35 width.
This is just my opinion but slicers should be used to compensate for different filament types and your printer should be firmware tuned to work with PLA with a layer width matching your nozzle size and a perimeter overlap of 5%
-
I'm embarrassed. I always thought that meant the nozzle size, and affiliated with the input right above it when you set the actual nozzle size.
So it was dumb luck that I had already had that set to manual and 0.40.I do have a happy update…
I installed the sock onto the heater block, and I finally got a chance to play around with pressure advance.
This is at 100mm/s, 0.16 layer height, and 210C. PLA+
I am quite pleased with myself.https://dl.dropboxusercontent.com/u/15733846/20170719_184505.mp4
Well….I thought it would show a thumbnail but at least it's a hyperlink.
Total and complete difference.
It would usually blow out while laying the line. Leaving the line ghastly under-extruded and/or broken completely.
The infill was always worse. (60% infill) But now it is full and uniform.Even though I didn't see a temperature fluctuation there must have been cold spots next to the orifice and nozzle.
It's the only thing I can figure. -
nice looking build are those igus carbon rods?
-
Thank you!
Not Igus, but according to the listing, Arris.
https://www.amazon.com/gp/product/B00TF8UY9A/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
I had to buy 2 sets because on the first order I found 1 to be bent 2/3 of the way.
The 2nd order both were straight.You'll notice the vendor as "Hobby-Wing". So they were probably meant for RC aero stuff.
I used to be into RC Helicopters like an addict would be into heroin and these are exactly like the rods I would use on my smaller electric choppers for the tail boom and landing skids.I am however using Igus bearings on the X-carriage. They were a little tight at first and I helped them out a little with some machine oil and they have been really turned out nice.
I have several hours on the machine and I took the carriage off just the other night to installed a modified version and I check the bearing tolerance and they were still very tight, yet sliding very smoothly. I would like to upgrade the Y carriage to Igus as well. I have linear bearings on it now. You could probably hear them screaming on the video.I think if I replaced those bearings, and got a quieter hotend fan, it would be near silent.
EDIT:
After re-reading what I just posted, I mentioned that the rods were bent. Wrong choice of words.
The diameter was not consistent all the way across the rod. The bearing would hang 2/3 across pretty bad.
I could've sanded them but since the other rod was perfect I opted to throw the dice and order another set.
I got lucky and both rods were perfect.
