Search found 25 matches

by bonesgeorge
04 May 2012, 12:34
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

Another way to do the wing bearings. I cut 5/16-18 threaded rod 2" long and then cut screwdriver slots but extra long set screws like this are available retail. With full size nuts the groove that the bearings ride on could only be about 1/8", which would work but a little deeper would be...
by bonesgeorge
04 May 2012, 05:27
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

I was too tired last night after 5 hours of traveling, but now I put up some information on the dimensions, and as I had not taken the machining time as an aspect in consideration, I did a few changes in this regard. The length between the bearings at the bottom part of the stands doesn't have to be...
by bonesgeorge
03 May 2012, 15:27
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

jk57, could you confirm my sketches about the wings' bearing track were entirely understandable? Yes, I think I understand. In my own design I tried to balance material weight, structural strength, and minimum machining time. Is 6 pounds is too heavy? Thanks for sharing your ideas. I wasn't quite s...
by bonesgeorge
03 May 2012, 15:03
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

Yep, there are other communities - RepRap is probably most like us, a lot of people working together in an open source way toward shared goals... they work on 3D printing technology. CNCZone.com has some forums for people developing CNC routers and mills which operate in a similar way. Edit: but I'...
by bonesgeorge
03 May 2012, 14:22
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

We are definitely a model community in this regard. I am extremely grateful to everyone for keeping up such a high standard of contribution and for sharing so freely for the last three years. Really incredible. So, is there any other community that is to create some other machines, or anyrhing all ...
by bonesgeorge
03 May 2012, 14:14
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

Beautiful renderings, bonesgeorge! Your work got my wheels turning. Here's still another idea for attaching the skate bearings to the tables. The 5/16" x 2" bolts and nuts are off the hackerspace scanner material list. The bearing assembly is a press fit between the threaded portions of t...
by bonesgeorge
03 May 2012, 13:57
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

The two wings are independent, and the amount they are separated by is determined by the length of the string underneath holding them together. The elastic cords pull the wings apart, so that the string is always taut, and the separation is maintained. To change the spacing, the string's length is ...
by bonesgeorge
03 May 2012, 11:41
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

I figured out how to avoid the need of numbers, or actually, to get numbers, so no probs! And, yeah, your openness, and fidelity towards the idea of creating something all together was really inspiring, guys! Sure, if you read around you got the idea what this community is all about, and how it work...
by bonesgeorge
01 May 2012, 05:12
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

Jack, I'd have a few couple of ideas that may be benefiting idea to be implemented into your new cradle that may reduce the ply needs of it to the level of the earlier, simple cradle used in the standard plans. So, if you have any documentations of dimensions, sketches with the figures of them I'd g...
by bonesgeorge
27 Apr 2012, 15:29
Forum: Scanners and Build Threads
Topic: Self-Adjusting Spine Support
Replies: 103
Views: 126950

Re: Self-Adjusting Spine Support

Just, wow! :shock:
jck57 wrote:CNC production prototype. Weight: 6 lbs.