Search found 1342 matches

by walshlg
Sun Nov 05, 2017 9:35 pm
Forum: Others
Topic: RINGING the electromechanical challenge
Replies: 37
Views: 1098

Re: RINGING the electromechanical challenge

JERK- jetguy explained it to me. Jerk is the speed below which acceleration/ deceleration will NOT be applied. Acceleration - still don't understand it. Units on display are max mm/sec. not mm/sec**2. If not at max, how do you calculate how much acceleration to apply? Does the slicer know jerk and a...
by walshlg
Fri Nov 03, 2017 5:03 pm
Forum: Others
Topic: RINGING the electromechanical challenge
Replies: 37
Views: 1098

Re: RINGING the electromechanical challenge

To me, it makes sense to start by measuring it. We are seeing ringing - are we all seeing the same ringing? What is the fundamental frequency of the ringing? If money was no object, the right way to measure it would be to put accelerometers all across the motion hardware (definitely agreeing with w...
by walshlg
Fri Nov 03, 2017 1:25 pm
Forum: Software
Topic: SUPPORTS
Replies: 2
Views: 157

Re: SUPPORTS

oh cool, never tried that!
by walshlg
Fri Nov 03, 2017 1:23 pm
Forum: Others
Topic: RINGING the electromechanical challenge
Replies: 37
Views: 1098

Re: RINGING the electromechanical challenge

On first read, Tinkerer, I thought that didn't make much sense but now I suspect that what you noticed was the interaction of the nozzle head on the previously printed material. That is another whole area we just wave our hands and ignore unless its bad enough to make a stepper skip or peel the prin...
by walshlg
Thu Nov 02, 2017 8:39 pm
Forum: Others
Topic: RINGING the electromechanical challenge
Replies: 37
Views: 1098

Re: RINGING the electromechanical challenge

Yes, that article sounded great but when you read it there is nothing specific, "just we can do this trust us". What I found fascinating was that it was done based on first principles (theory) rather than on measurement. I am a big fan of measuring things! I propose rig up a little acceler...
by walshlg
Mon Oct 30, 2017 4:44 pm
Forum: Hardware
Topic: Z axis checklist
Replies: 11
Views: 465

Re: Z axis checklist

make sure your couple isn't broken!
by walshlg
Fri Oct 27, 2017 4:46 pm
Forum: Hardware
Topic: LCD Box
Replies: 4
Views: 165

Re: LCD Box

you get at the cable first from the back of the front panel electronics box, then tip the printer on its side, take off bottom panel and you can find the extra cable folded and stuffed into a box like partition, pull the extra out of that slowly. Only when that is all free can you get it out of the ...
by walshlg
Fri Oct 27, 2017 4:38 pm
Forum: General
Topic: First Post, Looking for WebCam suggestion
Replies: 10
Views: 545

Re: First Post, Looking for WebCam suggestion

no specific recs BUT most webcams have the lens set to focus on too far a distance. Some can autofocus BUT you must put a plain background right next to the print bed or they will try to focus on the farthest object they see, or you can get a fixed focus one, open it up and break the glue on the len...
by walshlg
Wed Oct 25, 2017 1:05 pm
Forum: Printing Settings
Topic: Good print quality over supports possible?
Replies: 3
Views: 293

Re: Good print quality over supports possible?

use more support - make it a solid mass. Support gets stuck when the model is shifting too much
by walshlg
Sun Oct 22, 2017 2:19 am
Forum: User's Gallery
Topic: Thor Hammer/Captain America Shield
Replies: 7
Views: 1335

Re: Thor Hammer/Captain America Shield

great work!
by walshlg
Sun Oct 22, 2017 2:16 am
Forum: Printing Settings
Topic: Polymaker PolyFlex - printable? How?
Replies: 35
Views: 1092

Re: Polymaker PolyFlex - printable? How?

just saw a vague article about a "breakthrough" where some professor had a way to modify the g-code to reduce ringing. As best I can tell this was done on first principles. Seems to me you could add an accelerometer and do this heurisitcly , running a pid type tuning of the carriage-moveme...
by walshlg
Fri Oct 20, 2017 4:59 pm
Forum: Hardware
Topic: Changing the nozzle @ N2
Replies: 14
Views: 516

Re: Changing the nozzle @ N2

EldRick wrote:My problem is that there is not enough slack in the wires running to the heater and thermocouple - I can't drop the assembly enough to remove it.


buy the newer thermocouples, they are much longer and better constructed
by walshlg
Wed Oct 18, 2017 12:08 pm
Forum: Hardware
Topic: Changing the nozzle @ N2
Replies: 14
Views: 516

Re: Changing the nozzle @ N2

One suggestion, look and see and make a note of where the fans connect to the breakout board and then UNPLUG them before working on the hotend. It is so very easy to slip and ruin a fan when removing those fan screws
by walshlg
Mon Oct 16, 2017 4:41 pm
Forum: Printing Settings
Topic: Bad surface of layer on the underside of prints - what can be the reason?
Replies: 13
Views: 638

Re: Bad surface of layer on the underside of prints - what can be the reason?

another tip, especially with a curved bottom surface, is lift the entire model at least 10mm in Z and completely cover it with support, This way the support is at least 10mm thick and is more stable than the short supports people often make.
by walshlg
Mon Oct 16, 2017 4:35 pm
Forum: User's Gallery
Topic: Engineered...
Replies: 5
Views: 631

Re: Engineered...

nice, what is it??
by walshlg
Thu Oct 12, 2017 3:37 pm
Forum: Software
Topic: remote raised 3D ? wifi ?
Replies: 4
Views: 259

Re: remote raised 3D ? wifi ?

Some people use octoprint with these printers but you have to plug the usb from the octoprint directly into the motion controller board and then you can't use the front panel
by walshlg
Thu Oct 12, 2017 3:35 pm
Forum: Others
Topic: Raise touch release info
Replies: 3
Views: 239

Re: Raise touch release info

I believe he is asking if the updates are cumulative.

I'm pretty sure that each update is the complete code and the latest one is all you need.
by walshlg
Wed Oct 11, 2017 1:29 pm
Forum: Software
Topic: Z-position, Vertical and horizontal Offset, Line Support
Replies: 7
Views: 302

Re: Z-position, Vertical and horizontal Offset, Line Support

for first layer, there is a setting for first layer height. What it should be is a bit controversial and people swear by anything from 75-150% of layer height.

I'm surprised by the lateral offset, that may be a bug.
by walshlg
Wed Oct 11, 2017 12:51 pm
Forum: General
Topic: Strange Print Failure - Mystery?
Replies: 3
Views: 362

Re: Strange Print Failure - Mystery?

that was most likely from a head strike, these occur quite often with pla due to edge curl. make sure cooling fan is uncovered and insulating the hotend can help quite a bit.
by walshlg
Wed Oct 11, 2017 12:45 pm
Forum: General
Topic: Bondtech Upgrade - Z Axis Issue
Replies: 10
Views: 1061

Re: Bondtech Upgrade - Z Axis Issue

remember grinding can also mean high back pressure. change out to a new nozzle and perhaps raise the temp. I find that the optimal temp varies quite a bit among different rolls of petg.

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