Search found 58 matches

by sitzme
Tue May 20, 2014 10:03 am
Forum: Z-Axis and Tillt/Slide axis
Topic: Belt drive Z-axis
Replies: 7
Views: 11253

Re: Belt drive Z-axis

There should not be a significant permanent stretch of the belt. Usually belt drives equal faster motion with less resolution. That said, it would be interesting if someone tried it. Motor torque might be the limiting factor. Personally, I will stick to lead screws.
by sitzme
Mon Mar 31, 2014 12:04 pm
Forum: Vat Design and Construction
Topic: Possible pdms vat refresh method
Replies: 12
Views: 15937

Re: Possible pdms vat refresh method

This is an interesting discussion. I hope that the experiments do get conducted and lead to either an improved method of working with the PDMS layer or possibly an alternate material/method. No alternate material has been mentioned yet in this thread though. The best solution will likely be a compro...
by sitzme
Sat Mar 15, 2014 12:44 pm
Forum: Z-Axis and Tillt/Slide axis
Topic: Z Axis source
Replies: 8
Views: 9035

Re: Z Axis source

Here are some sample searches to give you an idea. http://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0.H0.Xcnc+slide+axis&_nkw=cnc+slide+axis&_sacat=0&_from=R40 http://www.ebay.com/sch/i.html?_odkw=cnc+slide+axis&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313...
by sitzme
Tue Mar 04, 2014 10:35 am
Forum: Software Forum
Topic: slide / tilt value need help
Replies: 3
Views: 4097

Re: slide / tilt value need help

Have you used another piece of software to verify the mechanical function? I use Pronterface to jog things around and set the end stops. Have you verified the number of steps per unit, etc? Have you set the current for the motor? Verified the motor wiring? Try swapping the X and Z motor connections ...
by sitzme
Tue Mar 04, 2014 10:28 am
Forum: Hardware
Topic: FIRMWARE
Replies: 16
Views: 14970

Re: FIRMWARE

If you are getting numerous errors during the firmware upload it might be that you need to use a different version of Arduino. Do a search on your hardware/firmware combo and see what pops up. Example "ramps marlin error". I have a Gen6 board that only likes one older version and nothing e...
by sitzme
Mon Mar 03, 2014 1:33 am
Forum: General
Topic: PDMS vs TEFLON
Replies: 9
Views: 15311

Re: PDMS vs TEFLON

The reason the PDMS works well is that it is gas permiable and the resin won't cure in the presence of oxygen. A very thin layer of uncured resin exists so there is no mechanical bond. Teflon doesn't share this property but is pretty slippery stuff and is more durable. I pondered using the PDMS to b...
by sitzme
Sat Feb 22, 2014 1:37 am
Forum: General
Topic: PDMS vs TEFLON
Replies: 9
Views: 15311

Re: PDMS vs TEFLON


This thread in Hardware documents progress to date. GG is glass so I don't expect it to degrade so long as it is not abraded.
by sitzme
Fri Feb 21, 2014 7:39 pm
Forum: General
Topic: PDMS vs TEFLON
Replies: 9
Views: 15311

Re: PDMS vs TEFLON

I am also finding that a slow release is required when printing on bare Gorilla Glass. I suspect that as the print area gets larger, time to release goes up also. Got some loud scarey noises before I reduced the speed! Also, how is your teflon attached? Adhesive, or stretched like a diaphragm?
by sitzme
Fri Feb 21, 2014 7:31 pm
Forum: Z-Axis and Tillt/Slide axis
Topic: Vat using Gorilla Glass and no coating
Replies: 9
Views: 14726

Re: Vat using Gorilla Glass and no coating

Someone asked how I work with nonstick Gorilla Glass. It is not so much that the glass is nonstick as much as it is very flexible. I would like to be able to use it without a coating but the jury is still out. My tests to date have been without any coatings but have yielded mixed results. The GG beh...
by sitzme
Thu Feb 20, 2014 8:15 pm
Forum: Software Forum
Topic: Multiple monitors
Replies: 17
Views: 13043

Re: Multiple monitors

Would it be useful to be able to have X and Y offsets available for each frame? My thought is that you have the projectors locked down with a slight overlap. Have a black border around each frame. Set the X,Y offsets to tweek the images until the desired alignment is achieved. If the border size and...