Free 173 Best Homemade Tools eBook:  
Page 3 of 3 FirstFirst 1 2 3
Results 21 to 28 of 28

Thread: Grinding machine for drum brakes.

  1. #21
    Supporting Member NeiljohnUK's Avatar
    Join Date
    Dec 2017
    Posts
    79
    Thanks
    7
    Thanked 36 Times in 21 Posts
    Good use for an old optical bench, I use optical bread-board off-cuts to make bases and work surfaces for some of my small machines too. Olderdan's method is similar to Jurid's abrasive coated brake pads we sold in the 80's for cleaning up disc faces and removing the surface layer, these days with most pads being significantly harder with lots more embedded metallic elements the discs wear much faster, so such tricks are no longer required, changing discs every 2-3 sets of pads being the norm now.

  2. #22

    Join Date
    Sep 2019
    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

  3. #23
    [email protected]
    Supporting Member
    tonyfoale's Avatar
    Join Date
    Nov 2016
    Location
    Spain
    Posts
    827
    Thanks
    329
    Thanked 1,383 Times in 412 Posts

    tonyfoale's Tools
    Quote Originally Posted by NeiljohnUK View Post
    Good use for an old optical bench, I use optical bread-board off-cuts to make bases and work surfaces for some of my small machines too. Olderdan's method is similar to Jurid's abrasive coated brake pads we sold in the 80's for cleaning up disc faces and removing the surface layer, these days with most pads being significantly harder with lots more embedded metallic elements the discs wear much faster, so such tricks are no longer required, changing discs every 2-3 sets of pads being the norm now.
    I got the optical table to use as a motorcycle frame building jig, but that is a very occasional use and as it takes up a lot of room I use the surface for mounting other things.

    Grinding machine for drum brakes.-frame10.jpg Grinding machine for drum brakes.-frame13.jpg Grinding machine for drum brakes.-frame21.jpg Grinding machine for drum brakes.-startbuild04.jpg
    Click images for full size.

  4. #24
    Supporting Member NeiljohnUK's Avatar
    Join Date
    Dec 2017
    Posts
    79
    Thanks
    7
    Thanked 36 Times in 21 Posts
    Best use I've seen outside of an optics lab, though that ones a little small, some of our set-ups use four 2m by 4m ones solidly linked together and floated on air legs.

  5. #25
    [email protected]
    Supporting Member
    tonyfoale's Avatar
    Join Date
    Nov 2016
    Location
    Spain
    Posts
    827
    Thanks
    329
    Thanked 1,383 Times in 412 Posts

    tonyfoale's Tools
    Quote Originally Posted by NeiljohnUK View Post
    Best use I've seen outside of an optics lab, though that ones a little small, some of our set-ups use four 2m by 4m ones solidly linked together and floated on air legs.
    Mine is 1.2 x 1.9 m. I lived in the US for 3 years and bought 3 from an optics company in Boston which was downsizing. The other two were much larger and they went to my employer. Mine came with very solid legs with air bag support at the top. When I returned to Spain I had a container for my stuff, this table, mill, lathe, motorbikes etc. just the normal stuff that anyone would accumulate in 3 years. However, there was no room in the container for the original legs and so I built a new support structure when I returned here. Three legs with height adjustment at the top.

    Grinding machine for drum brakes.-optical_table_on_new_stand.jpg Click image for full size.

  6. #26
    Supporting Member DIYSwede's Avatar
    Join Date
    May 2019
    Location
    Stockholm, Sweden...
    Posts
    178
    Thanks
    162
    Thanked 158 Times in 65 Posts

    DIYSwede's Tools
    Thanks Tony - are the 3-leg distances of your stand the same as the original support's?
    As your table doesn't seem to be supported neither at its Bessel nor the Airy points,
    I wonder about how these dimensions came about.

    Cheers
    Johan

  7. #27
    [email protected]
    Supporting Member
    tonyfoale's Avatar
    Join Date
    Nov 2016
    Location
    Spain
    Posts
    827
    Thanks
    329
    Thanked 1,383 Times in 412 Posts

    tonyfoale's Tools
    Quote Originally Posted by DIYSwede View Post
    Thanks Tony - are the 3-leg distances of your stand the same as the original support's?
    As your table doesn't seem to be supported neither at its Bessel nor the Airy points,
    I wonder about how these dimensions came about.
    Johan
    As soon as you put some heavy loads on such a table the idea of leg positioning for minimum sag or slopes etc. in the unloaded condition become somewhat irrelevant. In optics work you will generally be placing light weight objects with minimal effect on table stability and great accuracy is paramount. For my use there were other considerations, one being the maximum sensible area between the legs for a storage shelf.
    Engineering is about what works and this works.

  8. #28
    Supporting Member DIYSwede's Avatar
    Join Date
    May 2019
    Location
    Stockholm, Sweden...
    Posts
    178
    Thanks
    162
    Thanked 158 Times in 65 Posts

    DIYSwede's Tools
    Thanks Tony, for sharing exactly those considerations and criteria.


    Post your reply!
    Join 41,949 of us and get our 173 Must Read Homemade Tools eBook free.



    173 Must Read Homemade Tools

Thread Information

Users Browsing this Thread

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

Tags for this Thread

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
  •