. .

Thread: Hand Ergometer

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. 25-06-2013 #9
    FatFreddie's Avatar
    Lives in Sheffield, United Kingdom.
    FatFreddie
    Last Activity: 11-01-2024 Has been a member for 9-10 years. Has a total post count of 166. Received thanks 16 times, giving thanks to others 8 times.
    Quote Originally Posted by irving2008 View Post
    It could be 3D printed, in fact I was already thinking along those lines. Envelope would be around 80mm square x 6mm thick. I'd need the properties of PLA to check if its strong enough. What's the resolution of your printer?
    That size wouldn't be a problem, resolution is quoted at 0.0125mm and accuracy at 0.1mm (Mono Mendel - RepRapPro). The current nozzle is 0.5 mm (best used with a 0.4 mm or slightly smaller filament thickness) but I've got a 0.35 mm one that just needs putting together for finer detail.

    Some material specs - Click image for larger version.  Name: spec.png  Views: 1968  Size: 14.3 KB  ID: 9129

    Interesting PDF on designing for FDM (http://ode11.com/publications/sme_rp_2001.pdf).

    Because there is variable bond strength between the filaments, it's best to design so that the stresses are applied along the filaments but for things like gears that happens anyway since the slicer will trace round the perimeters.

    We could do strength tests before you commit to the design...
    Last edited by FatFreddie; 25-06-2013 at 09:07 PM.
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Second hand machines & their features
    By navins in forum Machine Discussion
    Replies: 5
    Last Post: 19-03-2014, 11:01 AM
  2. RFQ: Parts for hand ergometer (exercise bike)
    By irving2008 in forum Projects, Jobs & Requests
    Replies: 29
    Last Post: 16-09-2013, 12:46 PM
  3. 75 mm HAND WHEEL
    By Lee Roberts in forum Programmers Corner
    Replies: 18
    Last Post: 19-03-2012, 02:58 PM
  4. NEW MEMBER: want buy new or second hand cnc
    By buildwood in forum New Member Introductions
    Replies: 8
    Last Post: 20-10-2011, 05:36 PM
  5. NEW MEMBER: second hand machine
    By steve r in forum New Member Introductions
    Replies: 1
    Last Post: 18-11-2009, 09:00 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules