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

Latest topics

» has anyone checked out the sling shot channel lately?
by Andy. Tue Dec 12, 2017 2:11 pm

» Reciprocating Saw?
by c sitas Sun Dec 10, 2017 8:41 am

» Brace Hieght?
by chaz Fri Dec 08, 2017 8:02 pm

» My 2nd crossbow project - german crossbow with cranequin
by fester Thu Dec 07, 2017 12:08 pm

» Hemp cord and nut drilling?
by fester Sat Nov 25, 2017 5:22 am

» My project Powermaster
by EugeneSlagle Mon Oct 30, 2017 1:54 pm

» Lillohus crossbow
by Dark Factor Mon Oct 30, 2017 12:45 pm

» Old Powermaster project & question.
by EugeneSlagle Mon Oct 30, 2017 8:14 am

» Medieval composite bows
by Dark Factor Sat Oct 21, 2017 1:44 am

» Medieval bowyer
by Dark Factor Wed Oct 18, 2017 12:30 pm

» New crossbow builder
by wjbates1430 Tue Oct 17, 2017 2:10 pm

» Airsoft Crossbow-Finished at Last!
by JacobL Thu Oct 12, 2017 7:27 pm

» Powermaster Madness
by c sitas Wed Sep 27, 2017 8:41 am

» Powermaster
by c sitas Wed Sep 20, 2017 9:58 am

» Best wood for a novice?
by Geezer Sun Sep 17, 2017 9:21 am

» Adding a steel sear insert?
by Geezer Fri Sep 15, 2017 7:13 am

» Great Machines
by c sitas Sat Sep 09, 2017 5:39 pm

» Medieval Crossbow Bolts DIY Question
by Rumburak Thu Sep 07, 2017 12:17 pm

» Berkhamsted Castle and Glasgow Museum wooden prod crossbow
by Juniper Fri Aug 25, 2017 3:54 pm

» Beware of Alchem
by Archer46176 Mon Aug 21, 2017 3:33 pm

» How to measure and cut leather for prod
by Celtic Archer Sun Aug 20, 2017 5:56 pm

» Crossbow with built in lever?
by John Edgerton Thu Aug 17, 2017 12:38 pm

» Of Bows and Torsion Engines
by JacobL Mon Aug 14, 2017 12:03 pm

» Early Lever and pin Crossbow
by topfmine Mon Aug 14, 2017 8:56 am

» Crusader crossbow
by topfmine Mon Aug 14, 2017 8:53 am


    New builder with questions!

    Share
    avatar
    tensleep
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 1
    Join date : 2010-09-28

    New builder with questions!

    Post by tensleep on Wed Oct 13, 2010 12:04 am

    Greetings to the Forum,
    My first post with questions concerning my first build.

    Using information gathered here over the past several weeks, and from David Watson's
    "Iolo's First book of Crossbows", I have made an oak tiller w/ a delrin roller in a module
    configuration. Many, many thanks for all of that invaluable assistance.
    I am now addressing the prod. I have a 2" x 36" x 3/16 piece of 7075 al that I have roughed to these dimensions.
    1 3/4 center width, 32" tip to tip, 7/8 wide at this tip.
    1. Based on 3/16 thickness, what width/length should I make the string posts?
    2. Is it acceptable to roll a small amount of recurve at the tips?
    3. If so, generally how would recurve affect the parameter of the prod, if at all?
    4. In other projects, I have used a product called Moly Resin to finish metal components.
    Application requires heating component to 100 F., spray on Moly Resin, cure @300 F
    for 1 hour. My question is, would that procedure possible have an adverse affect on the
    temper of the 7075 aluminum?
    Thank You all again for this resource.
    Tensleep
    avatar
    zhangyimou
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 13
    Join date : 2010-08-03
    Location : The Netherlands (Holland)

    heating 7075

    Post by zhangyimou on Thu Oct 14, 2010 4:31 am

    i do not think that you change the temper or hardness of your alu. the timespan and temerature are to low for that.
    but you will have to look for technical datasheets of alu producers what these temperatures really do.
    most suppliers have them on their websites.

    grz

      Current date/time is Fri Dec 15, 2017 6:29 pm