Search found 25 matches

by charles@linquist.net
Sun Sep 23, 2018 11:22 pm
Forum: N Series
Topic: Higher extruder temperatures - above 300C for Ultem.
Replies: 9
Views: 1891

Re: Higher extruder temperatures - above 300C for Ultem.

You can just send me an email to my login address.
by charles@linquist.net
Sun Sep 23, 2018 11:21 pm
Forum: N Series
Topic: Higher extruder temperatures - above 300C for Ultem.
Replies: 9
Views: 1891

Re: Higher extruder temperatures - above 300C for Ultem.

Yes, I would like to know what you did. I want to be able to handle higher temperature filaments.
by charles@linquist.net
Sun Sep 23, 2018 11:19 pm
Forum: Pro2 Series
Topic: Filament Stepper Motors very hot - even when not printing with nozzle
Replies: 40
Views: 9297

Re: Filament Stepper Motors very hot - even when not printing with nozzle

I made two modifications to my single-extruder N2. Maybe they will work with the "pro" model. First, I changed the stepper motor to a bigger one. https://www.lulzbot.com/store/parts/nema-17-stepper-motor I didn't change the driver. But the bigger motor definitely has more torque. And it is...
by charles@linquist.net
Sun Sep 23, 2018 5:39 pm
Forum: N Series
Topic: Higher extruder temperatures - above 300C for Ultem.
Replies: 9
Views: 1891

Re: Higher extruder temperatures - above 300C for Ultem.

I asked RAISE for information on any information they had on what would be the limiting factors in raising the extruder temperature. Rather than checking for me, they claimed they couldn't due to "safety issues". I told them that my modifications of the machine (I have already made many) w...
by charles@linquist.net
Sun Sep 23, 2018 5:14 pm
Forum: N Series
Topic: Silicone Hot End Covers anyone tried these?
Replies: 15
Views: 2983

Re: Silicone Hot End Covers anyone tried these?

I have them on my printer and like them. Keeps the hot end cleaner. And it does heat up a bit faster.
by charles@linquist.net
Sat Sep 15, 2018 2:15 am
Forum: N Series
Topic: Higher extruder temperatures - above 300C for Ultem.
Replies: 9
Views: 1891

Re: Higher extruder temperatures - above 300C for Ultem.

I can heat the bed to well over 100C. I use a separate 30V / 400W power supply to run the bed. I built a FET switch that uses the 'ordinary' signal from the controller to turn the FET on and off. I could have used a relay, but that would be too noisy. The reason I added the extra power supply is tha...
by charles@linquist.net
Fri Sep 14, 2018 5:54 pm
Forum: N Series
Topic: Higher extruder temperatures - above 300C for Ultem.
Replies: 9
Views: 1891

Higher extruder temperatures - above 300C for Ultem.

My N2 specs say that the maximum extruder temperature is 300C. I normally print at 225-250C, so that hasn't been a problem. However, I have seen some filaments that need to be printed at more than 300C (Ultem, for example). My question is - what is the limiting factor in the current N2 hot end? Is i...
by charles@linquist.net
Fri Jul 27, 2018 3:01 am
Forum: Hardware
Topic: Bed took too long to heat - so I fixed the problem.
Replies: 6
Views: 2813

Re: Bed took too long to heat - so I fixed the problem.

I used FETs rather than a relay for quietness. I added the capacitor because I was worried that the FETs would oscillate when they turned off, but it probably isn't needed. And yes, I realize that the increased risetime will increase the dissipation slightly. But the FETs barely get warm. It has bee...
by charles@linquist.net
Thu Mar 22, 2018 3:52 am
Forum: Hardware
Topic: Extruder Stepper weak
Replies: 0
Views: 1119

Extruder Stepper weak

I found that my extruder stepper was skipping steps. While it will do that if things are jammed, mine was skipping far too often - and ruining prints. Early on, I noticed that the extruder stepper ran awfully hot, and sometimes the shaft would get so hot it would soften the filament and just "g...
by charles@linquist.net
Fri Aug 25, 2017 5:48 pm
Forum: Printing Settings
Topic: X-Y-Z adjustment
Replies: 1
Views: 1278

X-Y-Z adjustment

My N2 can't print a 300mm X 300mm print as advertised because it prints too far "forward" and too far to the left. I went into SETTINGS on the control panel and changed the "X" and "Y" values, but those don't seem to "stick" when I leave that screen and start ...
by charles@linquist.net
Thu Aug 03, 2017 4:23 pm
Forum: Hardware
Topic: Bed took too long to heat - so I fixed the problem.
Replies: 6
Views: 2813

Bed took too long to heat - so I fixed the problem.

I'm impatient. My heated bed took 13-20 minutes to reach 105C (which I use for ABS), depending on the temperature of the room the printer is located in. I have another 3D printer (FlashForge), and it is "ready to go' in about 5 minutes. I wanted the RAISE to keep up. The RAISE heater normally c...
by charles@linquist.net
Wed Dec 28, 2016 11:22 pm
Forum: Software
Topic: IdeaMaker will not load any files whatsoever - just hangs.
Replies: 7
Views: 2683

IdeaMaker will not load any files whatsoever - just hangs.

I have a computer running Windows 10/64 (with all updates). The machine is an i7/4790 with 16GB RAM. IdeaMaker always ran fine - until recently. I am running IdeaMaker version 2.2.3.360. When I try to open any file from IdeaMaker whatsoever - either using OPEN IDEA FILE or IMPORT MODEL, the program ...
by charles@linquist.net
Mon Aug 01, 2016 7:06 pm
Forum: User's Gallery
Topic: Problem with limit switch
Replies: 4
Views: 2794

Problem with limit switch

My RAISE N2 made a horrible banging noise, followed by a loud buzz before it started printing a job. I suspected that the carriage might be blocked, preventing it from fully depressing the limit switch on the top/front/left of the machine (when viewed from the front). Upon inspection, I found that t...
by charles@linquist.net
Sun Jun 12, 2016 2:43 pm
Forum: Hardware
Topic: Calibration
Replies: 1
Views: 1086

Calibration

I find that my N2 prints "small" by about 1.5%. Although this may be due to ABS shrinkage, I would like to compensate. My other printer had an easy means of adjusting the steps/mm, but I can't find any provision in the RAISE to do this. Is there a manual, or SOMETHING that tells me how to ...
by charles@linquist.net
Mon May 30, 2016 2:26 pm
Forum: General
Topic: Printing speed
Replies: 24
Views: 10167

Re: Printing speed

Thank you for explaining this - and for your commitment to increase the printing speed. Accuracy and reliability ARE more important than speed. But a slow printer gets cursed, nonetheless. I spent quite a bit of time tuning the FF for maximum speed without degrading quality. And it is certainly reli...
by charles@linquist.net
Mon May 30, 2016 12:19 am
Forum: General
Topic: Printing speed
Replies: 24
Views: 10167

Re: Printing speed

Jetguy - thanks for the schematics and other information!!! My FF has a 50W heater (at 24V), so at 28.5V it produces 70W (50* (28.5^2/24^2)) of heat. I also mentioned that I machined my own heater/nozzle block. It is a bit larger than the original in all dimensions. I made it about 5mm "taller&...
by charles@linquist.net
Mon May 30, 2016 12:00 am
Forum: General
Topic: Printing speed
Replies: 24
Views: 10167

Re: Printing speed

I haven't had a chance to run Jetguy's test, since I needed two parts right away. The part fits on the FF (barely). I set the RAISE to print at 120mm/sec for the "Default Printing Speed" 80mm/sec for the Inner Shell speed 200 mm/sec for the X/Y axis movement speed 70 mm/sec for the Outer s...
by charles@linquist.net
Sun May 29, 2016 6:15 am
Forum: General
Topic: Printing speed
Replies: 24
Views: 10167

Re: Printing speed

I'll see what I can do tomorrow. Time to go to bed here.
by charles@linquist.net
Sun May 29, 2016 1:40 am
Forum: General
Topic: Printing speed
Replies: 24
Views: 10167

Re: Printing speed

I bought my FF two years ago. I was thinking that now, all printers would come from the factory that were better and faster than the old one that I have modified myself at home (for a total cost of less than $200). It is true that I am an Electrical Engineer, but I certainly don't spend all my time ...
by charles@linquist.net
Sat May 28, 2016 9:06 pm
Forum: General
Topic: Printing speed
Replies: 24
Views: 10167

Re: Printing speed

And I should also state that I only print with ABS and Taulman alloy 910. Years ago, I abandoned PLA because it gets soft if I leave it in the car in the summertime.

And I'll put in a plug... I have had excellent results when using HATCHBOX (brand) ABS.

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