Search found 84 matches

by ejs
Sat Oct 27, 2012 10:27 pm
Forum: Design Ideas
Topic: It's time for a metal v-wheel
Replies: 36
Views: 12388

It's time for a metal v-wheel

This is a branch of the discussion found here http://www.shapeoko.com/forum/viewtopic.php?f=11&t=907&start=10 So the idea has come up more than once of reworking the v-wheels away from Delrin towards metal. There are several concerns: ~The available steel wheels have dimensions that vary from the De...
by ejs
Sat Oct 27, 2012 6:04 am
Forum: Design Ideas
Topic: Makerslide position encoders?
Replies: 9
Views: 3761

Re: Makerslide position encoders?

Reading the Wikipedia article about linear encoders, it occurred to me that an optical mouse could be used to encode relative motion with very good precision, at least on the small scale (mice are not designed for low drift over large distances, so the repeatability would be awful), by mounting it ...
by ejs
Sat Oct 27, 2012 3:31 am
Forum: Design Ideas
Topic: Precision washers were causing slop: what I did to fix it
Replies: 22
Views: 9295

Re: Precision washers were causing slop: what I did to fix i

I love the idea of using a copper alloy for their ease of cutting and relatively soft characteristics. That's why I decided to use one for the upgraded spacers. What I hugely dislike about them, though, is the cost. Copper is so pricey these days that a full set of 16 would be prohibitive. But still...
by ejs
Tue Oct 23, 2012 3:32 pm
Forum: Design Ideas
Topic: Precision washers were causing slop: what I did to fix it
Replies: 22
Views: 9295

Re: Precision washers were causing slop: what I did to fix i

Also, I must say I am impressed with your original post EJS! You took the time to work to debug the problem and develop a solution. Not only that, you went on to clearly explain the issue here and offer the solution on your store. To this I say "Thank you!" Hey, thanks, northbear! I'm just trying t...
by ejs
Tue Oct 23, 2012 4:47 am
Forum: Design Ideas
Topic: Precision washers were causing slop: what I did to fix it
Replies: 22
Views: 9295

Re: Precision washers were causing slop: what I did to fix i

Really? Would you site a source? I couldn't find anything more exact than ±5%. And that was for shim washers.
Nothing I could find was as exact as I needed.
by ejs
Tue Oct 23, 2012 4:05 am
Forum: For Sale
Topic: V-Wheel Precision Washer upgrade for your exacting CNC setup
Replies: 0
Views: 2483

V-Wheel Precision Washer upgrade for your exacting CNC setup

These are tuned metal spacer washers machined to replace over or undersized "precision" washers that may have come with your kit. Overly thick washers create a situation where the Z-axis does not remain satisfactorily perpendicular to the cutting surface. See the explanatory thread I posted for more...
by ejs
Tue Oct 23, 2012 2:07 am
Forum: Design Ideas
Topic: Precision washers were causing slop: what I did to fix it
Replies: 22
Views: 9295

Precision washers were causing slop: what I did to fix it

There have been a few points of frustration with the kit as I've gone along. Foremost was the electronics, which many of you know I solved by beginning to produce rather than wait for someone else to. One of the big, big things that got under me skin towards the end of the build is the increasingly ...
by ejs
Tue Oct 23, 2012 1:31 am
Forum: Software - CAD, CAM, Workflow Help
Topic: Web Based GCode Viewer
Replies: 2
Views: 1662

Re: Web Based GCode Viewer

Hi All, Friend of HackPittsburgh Jeremy Herrman has made some enhancements of his own. He's a great guy, and had a whole setup at the Pittsburgh Maker Faire where people could be scanned and printed while they waited. http://jherrman.com/2012/10/gcode-viewer/ Here's yours truly: http://skfb.ly/life1...
by ejs
Mon Oct 22, 2012 7:21 pm
Forum: Design Ideas
Topic: fundamental design idea/question - instead of makerslide...
Replies: 15
Views: 4044

Re: fundamental design idea/question - instead of makerslide

As mentioned, this has been independently considered. I rethink it every time MakerSlide is out of stock, or, as they did recently, changed the dimensions of the standard stock. I am always dissatisfied when a crucial component can't be sourced. There is a way to take care of this with low cost brac...
by ejs
Mon Oct 22, 2012 6:44 pm
Forum: Build Logs
Topic: Cat's ShapeOko (#709)
Replies: 19
Views: 9372

Re: Cat's ShapeOko (#709)

Cat, It's lovely to see your Z-axis modifications. I initially did the same method on my build, sandwiching the bearing between the two nuts. When I realized there was contact between the slide and the lower nut, I undid the mod. I never thought to simply cut away material from the slide itself--tha...