Search found 536 matches

by CastIrony
Tue Jan 13, 2015 4:49 am
Forum: tinyG
Topic: Drive safe for the gantry axis to allow for rotary control
Replies: 5
Views: 1387

Re: Drive safe for the gantry axis to allow for rotary contr

I can think of two other options: 1. Run both Y axis motors off a single driver, like people do with the gShield. 2. Unplug the x axis, and plug in the rotary axis instead, as you probably won't need motion in that axis and rotation at the same time. I'd lean towards option #1. If you do #2, you'll ...
by CastIrony
Fri Jan 09, 2015 7:52 pm
Forum: Tooling & Fixtures
Topic: aluminum extrusion for wasteboard
Replies: 2
Views: 1473

Re: aluminum extrusion for wasteboard

Ok, I found the thread, and you're in it :D

Were you mostly commenting on the brackets?
by CastIrony
Fri Jan 09, 2015 7:34 pm
Forum: Tooling & Fixtures
Topic: aluminum extrusion for wasteboard
Replies: 2
Views: 1473

Re: aluminum extrusion for wasteboard

I know I've seen people do this on here in the past, I'll track down the threads.

Sadly, the numbers don't add up quite so nicely for the SO3 wasteboard size :)
by CastIrony
Wed Dec 31, 2014 12:06 am
Forum: Member Projects
Topic: Squaring X and Y gantry
Replies: 7
Views: 2115

Re: Squaring X and Y gantry

[To square, I did something that most people can't: I am driving the machine with custom code, so I modified the driver: When moving in Y, the driver makes the correction under the hood, adjusting X to make the machine perfectly squared in reality, but reporting back "false", uncorrected X coordina...
by CastIrony
Wed Dec 24, 2014 2:46 am
Forum: GRBL
Topic: Using conductive paint to AutoLevel slate
Replies: 25
Views: 5199

Re: Using conductive paint to AutoLevel slate

People in the US can get Bare Conductive paint from Adafruit.
by CastIrony
Fri Dec 19, 2014 12:28 am
Forum: Member Projects
Topic: Mini Cooper Logo
Replies: 4
Views: 2039

Re: Mini Cooper Logo

McOtis wrote:I use a 1/8" Engraving bit.

An example of the type of bit.

I used MakerCAM to plan out the paths; I set the cutting diameter to 0.02" and cut at 30IPM.
With a V bit like that, you might even be able to use something like F-Engrave to do sharp inner corners
by CastIrony
Tue Nov 18, 2014 2:57 am
Forum: Member Projects
Topic: Hex Nut Knob
Replies: 4
Views: 1949

Re: Hex Nut Knob

McOtis wrote:Thanks.
It appears I need to tweak my Z axis steps per mm.
There was about a paper width of material left at the bottom.
Is it possible the material was just thicker than expected?
by CastIrony
Wed Nov 12, 2014 6:59 pm
Forum: Electronics
Topic: Discussion of motor characteristics
Replies: 15
Views: 4601

Re: Discussion of motor characteristics

Patently false. We've been there, talked this to death -- it's a common misconception based on unstated assumptions that make a huge difference in how torque would be measured. In brief, microstepping does not reduce torque at all, but it does not increase the precision with which the actual positi...
by CastIrony
Mon Nov 10, 2014 7:47 pm
Forum: Discussion
Topic: Connect Car Vac to PS
Replies: 3
Views: 806

Re: Connect Car Vac to PS

I'm pretty sure the Arduino itself is just pulling 5V off the USB connection, which can only supply half an amp. I doubt that would power a vacuum very well. I'd just get one of these: http://www.amazon.com/adapter-cigarette-converter-Amplifier-refrigerator/dp/B0081CWCHI/ref=sr_1_2?s=electronics&ie=...