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Crossbows - Everything about Building, Modding, and Using your Crossbow Gear

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5 posters

    Nut bearing blocks

    mac
    mac
    Master Weaponsmith
    Master Weaponsmith

    Posts : 560
    Join date : 2010-12-23
    Location : Near Philly USA

    Nut bearing blocks - Page 2 Empty Nut bearing blocks

    Post by mac Mon Apr 25, 2011 2:00 pm

    First topic message reminder :

    I've been looking at some of the projects over on http://armborst.forum24.se/ and was struck by a clever method to keep the front and back bearing blocks aligned while in-letting them into the tiller. In these pics, the two bearings have been machined out of a big piece of antler and left with a very substantial attachment at the bottom.

    Nut bearing blocks - Page 2 Img_2410

    Nut bearing blocks - Page 2 Armbor10

    Nut bearing blocks - Page 2 Armbor11

    I have always made the front and back bearing separate, but getting everything to be coaxial and properly let into the tiller can be a lot of trouble.

    last night I imagined this method....
    --The two bearings are machined up using whatever method works.
    --The nut is wrapped in a strip of paper to provide the proper clearance.
    --The two bearings are glued temporarily to a wooden jig, with the nut captured between them.
    --The whole assemble can be let into the tiller, using soot, or whatever other marking method you chose.
    --When everything fits properly, the nut is removed, and the bearings are glued in place, leaving the jig to assist in retaining the orientation.
    --When the glue is set, the jig is removed.

    Mac
    [img]Nut bearing blocks - Page 2 Bearin10[/img]


    Last edited by Ivo on Mon Nov 14, 2011 5:37 pm; edited 1 time in total (Reason for editing : Inserting images)
    mac
    mac
    Master Weaponsmith
    Master Weaponsmith

    Posts : 560
    Join date : 2010-12-23
    Location : Near Philly USA

    Nut bearing blocks - Page 2 Empty Re: Nut bearing blocks

    Post by mac Thu Apr 28, 2011 7:40 pm

    8fingers wrote: I know a gunsmith who uses cheap lipstick for his inletting markers. It is fast and easy to see on dark woods.

    I have heard of using lipstick, but never tried it. It's probably a lot less messy than the grease based inletting compounds I usually use.

    Here's a link to a discussion of inletting compounds on a machinest's forum. http://www.practicalmachinist.com/vb/gunsmithing/qt-home-made-inletting-black-197205/
    ...and another from a gun forum...
    http://forums.gunbroker.com/topic.asp?TOPIC_ID=373268

    Some commercial products.
    http://www.midwayusa.com/viewproduct/?productnumber=123915
    http://www.trackofthewolf.com/categories/partList.aspx?catID=5&subID=63&styleID=210&AspxAutoDetectCookieSupport=1&as=1

    Mac

      Current date/time is Tue Sep 28, 2021 12:53 am