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Re: Heated cooling fan - 8 years ago

I will not say your wrong. It's definitely an issue of power and to do it with any finesse it would be more difficult the strapping heat gun or hair dry with a SS relay. The issue is that with some designs a heated bed is not reasonable. For a heated bed the wattage used is increased by the square of area, roughly speaking. That build areas with heated bed in significant. This is where heated

by Kassie - General

Heated cooling fan - 8 years ago

I have yet to experiment with this idea myself, but using a heated fans possible along with enclosure to try and eliminate the heated bed. My thinking is that cooling should get temperatures rapidly below the glass transition or may right into, but farther cooling may hurts layer adhesive. Being able to quickly cool to a more ideal temperature would mean the nozzle temp would not need to be as h

by Kassie - General

Re: Reprappers in Portland Oregon - 13 years ago

Hey everyone in portland, I've been reprapping for about a year now down in Eugene. I have two machine (techzone Huxley and a Prusa), but almost no success prints to show for it. I am interested in seeing working machine and collaborating with reprappers (seasoned or new/curious). Is anything happening in eugene or still happening in portland. Kassie

by Kassie - Oregon, Portland RepRap User Group

Adding cooling fan questions - 13 years ago

I just recently switched from Sanguinololu to Ramps 1.4. I have everything up an running except cooling fans. I currently have two 5v 150ma fan mounted on my extruder and would like a third for my case. As far as I can tell, the extruder fan can be controlled by pin 9 but I don't have any idea how to connect them up on the shield. Do I need to add a mosfet to power pin 9 for fans? Is there a d

by Kassie - RAMPS Electronics

Re: Skienforge help, Huxley bowden fix, New hot tip - 13 years ago

I attach my Skeinforge settings for printing in PLA. I found that most of the defaults work will, but I had two major issues. First, The firmware way needs to be calibrated before using with skeinforge. The biggest problem calibration issue was regarding the extrude steps. The default is something like 12 and the actual number I ended up using was 166. Second, I had issues with my z axis no

by Kassie - General

Re: Progressively weaken Stepper Motor - 13 years ago

DeuxVis Thanks for your comments and I wish you well in you build. When you get to the extruder, make sure to have a few extra hand. I've been through about 6 so far, not all of them die from of my mistakes. I have a few I ideas about the cause of the friction, but didn't bring them up here because the is a forum about steppers (I'm new to posting in forum so I was worried about proper etique

by Kassie - Stepper Motors, Servo Motors, DC Motors

Re: Progressively weaken Stepper Motor - 13 years ago

QuoteYou mean, sort of a brute force attack? That's a considerable idea in an army battle, but in civil mechanics you should find the reason for that high friction Good point! I completely agree that upgrading the stepper is not the ideal option. BTW I love the metaphor.

by Kassie - Stepper Motors, Servo Motors, DC Motors

Re: Progressively weaken Stepper Motor - 13 years ago

Thanks for you repIy! I should have thought to do this earlier. Anyway I swapped the connections to the electronics, in other words the Y-axis electronics connected to the X-axis motor and visa versa, and that made no difference. The motor could still not move the x carriage. I had the same result with the y motor connected to the x-axis. So I'm pretty sure it's not a matter of having a fault

by Kassie - Stepper Motors, Servo Motors, DC Motors

Progressively weaken Stepper Motor - 13 years ago

Hello and thanks in advance. I purchased the Huxley kit from techzone, but am having trouble with one of the four stepper motors. It seems to having almost no holding strength and the problem is getting progressively worse. The stepper motor is installed to control the x-axis (the one with the X/extruder-carriage) and is unable to move the carriage at any speed. First, I marked the shaft of t

by Kassie - Stepper Motors, Servo Motors, DC Motors