Free 186 More Best Homemade Tools eBook:  
Get 2,000+ tool plans, full site access, and more.

User Tag List

Results 1 to 4 of 4

Thread: Miter Datumizer

  1. #1
    Supporting Member Toolmaker51's Avatar
    Join Date
    Feb 2016
    Location
    Midwest USA
    Posts
    5,330
    Thanks
    7,041
    Thanked 2,977 Times in 1,892 Posts

    Toolmaker51's Tools

    Miter Datumizer

    My employer builds machinery for baking industry on weldments of .180 wall 1.5 x 3 rectangular tubing. Our machine tools are on modest side.
    [shop hand] "...that saw can't cut square". [me] Sure, stand for long material isn't level with table. [shop hand] "Oh".
    Without a roll-in bandsaw I hesitate cutting 45's to create perpendicular frames. An outside shop does them, VERY accurately. Much of the drilling and tapping is before welding process, so assembly is direct as possible. These lengths of tube can be 18' or more, good angles are good foundation to proceed on.
    Drilling is done on the mill, long parts supported by outboard stands. I use the DRO over greatest distance possible, re-setting tube and X axis over entire length, tracking that with reference points along the way...
    Layouts were iffy; one man trying to keep a tape measure perched on narrow or wide sides and pull dependable marks from the miter.
    So, honoring pitch of hiring interview, a solution was created. Presenting "The Miter Datumizer". Patent non-pending, for entity of no sense of humor anyway. After collecting remnant material I mocked up various ways to attain desired geometry, without a big mill or surface grinder.
    Before Miter Datumizer-miter-datumizer-1-.jpg After Miter Datumizer-miter-datumizer-2-.jpg
    2 sets [right and left] of roll pins are positioned tangent to angle at cut edge of tube, 1 touches on narrower stock. Few holes go all the way through, so that justifies right or left configuration. Just push one set of pins down into place. Sawcuts need to be checked for burrs. Miter Datumizer-miter-datumizer-3-.jpg
    The cutaway precisely represents end of miter point, to correctly locate tape hook in same plane. Miter Datumizer-miter-datumizer-4-.jpg
    What look like feet on lower edge of angle stock, are. Took some prep work to get hot-rolled material into acceptable conditions of flat and square in 3 axis, yet preserve hard scale on raw stock.
    I laid out pin locations originally to the milled outside edge, before drilling decided otherwise.
    In use, a small bar clamp holds it in place. Thought about magnets, but swarf isn't a decent reference surface yet.
    Want one? Haven't a set of plans; all you need is a little trigonometry, and a scrap of angle iron, this is about 5.5" long 2 x 4 IIRC.
    If you have an edge finder, displace positions equally in two directions you can skip the trig!
    Not really, it's still there, minus the calculations.

    186 More Best Homemade Tools eBook
    Sincerely,
    Toolmaker51
    ...we'll learn more by wandering than searching...

  2. The Following 12 Users Say Thank You to Toolmaker51 For This Useful Post:

    Captn Roy (Jun 27, 2018), Christophe Mineau (Feb 26, 2018), Frank S (Feb 26, 2018), Jon (Feb 25, 2018), mklotz (Feb 26, 2018), NortonDommi (Feb 26, 2018), olderdan (Feb 25, 2018), PJs (Feb 26, 2018), rlm98253 (Feb 25, 2018), Seedtick (Feb 25, 2018), volodar (Jun 27, 2018), zarembak (Feb 26, 2018)

  3. #2
    zarembak's Avatar
    Join Date
    Sep 2017
    Posts
    18
    Thanks
    140
    Thanked 6 Times in 6 Posts
    Neat Idea.

    2000 Tool Plans

  4. #3
    Supporting Member Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    11,178
    Thanks
    1,974
    Thanked 8,766 Times in 4,195 Posts

    Frank S's Tools
    Now the only problem is to teach shop hand this is a tool
    Never try to tell me it can't be done
    When I have to paint I use KBS products

  5. #4
    Content Editor
    Supporting Member
    DIYer's Avatar
    Join Date
    Aug 2013
    Posts
    3,056
    Thanks
    772
    Thanked 1,850 Times in 1,652 Posts


    Thanks Toolmaker51! We've added your Miter Measuring Aid to our Measuring and Marking category,
    as well as to your builder page: Toolmaker51's Homemade Tools. Your receipt:






    186 More Best Homemade Tools eBook

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
  •