Search found 493 matches

by zemlin
Sun Mar 29, 2020 6:49 pm
Forum: Hardware
Topic: Replacing print head linear bearings ?!?
Replies: 4
Views: 1105

Re: Replacing print head linear bearings ?!?

This is an N series. Is the carrier different on the Pro?
by zemlin
Sun Mar 29, 2020 3:13 pm
Forum: N Series
Topic: Another Quad Fan Plan - now Penta Fan
Replies: 7
Views: 1800

Re: Another Quad Fan Plan

Machine is running with the new fan arrangement. The hot-end cooling appears to be a bit inferior to the factory setup. I may try to find a spot to place one more fan to feed cool air to the heat sinks - might just be pulling in hot air from the heat blocks. The air flow seems good. The print coolin...
by zemlin
Sat Mar 28, 2020 12:24 am
Forum: Pro2 Series
Topic: Print Plate deforms strongly
Replies: 9
Views: 1855

Re: Print Plate deforms strongly

I thought you were saying the bed before printing was off by 2-3mm. What you're saying is that you're getting 2-3mm of warp in an ABS print. That is believable. ABS can be tricky material, and not all ABS filaments are created equal. I've had some that I've never been able to print with and others t...
by zemlin
Sat Mar 28, 2020 12:15 am
Forum: Hardware
Topic: Replacing print head linear bearings ?!?
Replies: 4
Views: 1105

Replacing print head linear bearings ?!?

Who's the poor, unfortunate, sadistic soul who designed the bearing retention for these things? The X-Axis bearing isn't a big deal, but the Y-Axis has two circlips - one practically inaccessible due to the filament tubes, the other is locked in place in a narrow groove because there's no clearance ...
by zemlin
Fri Mar 27, 2020 6:33 pm
Forum: Pro2 Series
Topic: Print Plate deforms strongly
Replies: 9
Views: 1855

Re: Print Plate deforms strongly

Are you sure you're not missing a decimal on your measurements? A 2-3mm deviation from flat would be huge. .2mm is still a lot, but more understandable. If you are seeing a rise in the center, I'm guessing it's actually slight sag of the cross rods supporting the print head. The simply supported rod...
by zemlin
Fri Mar 27, 2020 1:16 pm
Forum: N Series
Topic: Heater rod/Thermocouple replacement
Replies: 8
Views: 1376

Re: Heater rod/Thermocouple replacement

by zemlin
Fri Mar 27, 2020 12:48 pm
Forum: N Series
Topic: Another Quad Fan Plan - now Penta Fan
Replies: 7
Views: 1800

Re: Another Quad Fan Plan

Ran the first set of parts last night. Air flow from both fans feels good. Made a couple of minor design changes and the second set is printing now. Should be able to put the machine together tonight or tomorrow and I have three multi-day prints to run right off the bat - so if I've created any issu...
by zemlin
Thu Mar 26, 2020 10:03 pm
Forum: N Series
Topic: Another Quad Fan Plan - now Penta Fan
Replies: 7
Views: 1800

Another Quad Fan Plan - now Penta Fan

I've always wanted to add controllable cooling fans to my N2 and N2 Plus printers, but never got around to designing anything until today. This is just the first pass, and I haven't made or tested anything yet - but I hope to have parts for this weekend. Have some clear eSun PC for the job. All the ...
by zemlin
Thu Mar 26, 2020 11:07 am
Forum: N Series
Topic: CAD model of N2 head assembly
Replies: 4
Views: 2105

Re: CAD model of N2 head assembly

STP and IGES
by zemlin
Thu Mar 26, 2020 3:18 am
Forum: N Series
Topic: CAD model of N2 head assembly
Replies: 4
Views: 2105

Re: CAD model of N2 head assembly

Need to replace gantry bearings and rods on my N2 + after over 3500 hours of trouble-free printing. I ordered the wrong bearings - didn't get the long LM8 bearings - the proper bearing is LM8LUU. So having the head apart and waiting on the correct bearings, I had the opportunity to model up the bits...
by zemlin
Tue Mar 24, 2020 12:57 am
Forum: Hardware
Topic: N2 Y Axis not working
Replies: 7
Views: 1965

Re: N2 Y Axis not working

How 'bout if you swap X and Y motor cables on the controller board. It could be a wiring issue. You won't want to let an axis plow into the limit switch, but you could start a home from the middle of the bed and quickly kill power when things start moving. If you swap cables and Y doesn't move while...
by zemlin
Mon Mar 23, 2020 9:11 pm
Forum: Printing Settings
Topic: Recommended filament for 0.2mm nozzle
Replies: 1
Views: 1674

Re: Recommended filament for 0.2mm nozzle

I've used PLA and PC with a .2mm nozzle.
Have you tried raising the temperature on your ABS?
by zemlin
Sun Mar 22, 2020 2:33 am
Forum: Printing Settings
Topic: First layer on top of a support is a mess
Replies: 6
Views: 1882

Re: First layer on top of a support is a mess

IMHO, .45 layer is too thick for a .8 nozzle. Since support separation is controllable only by the number of layers of separation, you need to tweak your layer thickness to optimize your support. If your layer thickness is too great, the first layer on support is too far away from the support and pr...
by zemlin
Sun Mar 22, 2020 1:25 am
Forum: Printing Settings
Topic: STL Files for Temperature Bracketing
Replies: 1
Views: 2377

STL Files for Temperature Bracketing

When figuring out a new filament or process I often print out a bunch of little test parts, each one printed at a different temperature so I can see which one has the best appearance, layer strength, or whatever it is I'm looking for at the time. The problem is that once the parts are off the plate ...
by zemlin
Sat Mar 21, 2020 1:07 pm
Forum: Feature Requests, Ideas, Wishes
Topic: Z strengthening injection columns
Replies: 2
Views: 1924

Re: Z strengthening injection columns

FWIW, I often print parts with through holes for reinforcement rods. I use steel. I'll leave a straight hole in a part - for small holes I will ream them to size before driving in the rods. Larger holes I can generally use as-printed if I'm careful about the ID. I'll put a small helix in the hole, o...
by zemlin
Wed Mar 18, 2020 10:51 pm
Forum: General
Topic: ABS PROBLEM
Replies: 11
Views: 2310

Re: ABS PROBLEM

Looks like the extrusion width is spot on. I'd still suggest increasing the flow rate a bit. That will get you a fatter bead without increasing the shell spacing. Should result in better bonding on the sides of the shells.
by zemlin
Wed Mar 18, 2020 4:15 pm
Forum: Hardware
Topic: Has anyone done a 32bit upgrade to the N2 series?
Replies: 22
Views: 5115

Re: Has anyone done a 32bit upgrade to the N2 series?

Been giving this some thought myself. I plan to mount the thermocouple board on the print head so I don' t need to run thermocouple wire through the machine. Also going to look at the chips on the Raise board that's up there already. If it's the same chips as the Duet board, maybe it would work for ...
by zemlin
Tue Mar 17, 2020 8:14 pm
Forum: General
Topic: ABS PROBLEM
Replies: 11
Views: 2310

Re: ABS PROBLEM

The overlap percentage only impacts thin walls where shells are being squeezed down in an effort to maintain the geometry. I don't use IdeaMaker, so I could be wrong here, but it looks like you need to go to the ADVANCE tab and check the Override Filament Setting box to increase flow rate overall. I...
by zemlin
Tue Mar 17, 2020 1:20 am
Forum: General
Topic: ABS PROBLEM
Replies: 11
Views: 2310

Re: ABS PROBLEM

I generally use no cooling on ABS. I've seen this on PETG prints, but don't think I've ever had perimeters separate on ABS. Also, you should look at your flow or extrusion coefficient values to make sure you're getting the extrusion width you're asking for.
by zemlin
Mon Mar 16, 2020 1:16 am
Forum: General
Topic: Layer Shift Pro2 - Assistance Appreciated
Replies: 16
Views: 3030

Re: Layer Shift Pro2 - Assistance Appreciated

I can't say for sure that you're running too fast, but a 1mm nozzle is pushing more than 6x the plastic going through the factory .4mm nozzle. That a big demand on the hot end and I think you run the risk of extruding plastic that hasn't hit the set point. As I mentioned earlier, I ran a 1mm nozzle ...

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