The Arbalist Guild

Would you like to react to this message? Create an account in a few clicks or log in to continue.

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

Latest topics

» Ball shooting Crossbows worth the bother
by topfmine Wed Sep 15, 2021 3:24 pm

» Chu Ko Nu - repeating chinese crossbow
by Dark Factor Mon Sep 06, 2021 10:36 am

» Skew of tiller
by drawknife Fri Aug 27, 2021 9:18 am

» tiller desgin
by crusader Wed Aug 18, 2021 10:37 am

» Want to build modern target crossbow
by ora8i Fri Aug 13, 2021 1:20 pm

» starting a 1400's replica
by tghsmith Wed Aug 11, 2021 10:25 am

» New Medieval just about finished
by Dark Factor Mon Aug 02, 2021 6:41 am

» How do I tune this
by stuckinthemud1 Sun Jul 25, 2021 3:14 am

» Plans and materials for my first build
by c sitas Sat Jul 03, 2021 7:39 am

» Bolt rest
by stuckinthemud1 Mon Jun 14, 2021 3:24 pm

» Collotiere a Charavines crossbow
by stuckinthemud1 Sun Jun 06, 2021 2:25 pm

» ash lath and pin-lock crossbow
by stuckinthemud1 Wed Jun 02, 2021 7:56 am

» Late medieval tournament distances?
by stuckinthemud1 Thu Apr 15, 2021 8:20 am

» Cutting delrin straight by hand?
by kenh Thu Apr 01, 2021 8:24 pm

» Other forums like this one?
by stuckinthemud1 Tue Mar 30, 2021 9:23 am

» new find in china, terra cotta warrior site
by tghsmith Thu Mar 25, 2021 4:42 am

» Crossbow Books
by Andy. Sun Mar 14, 2021 3:46 pm

» 95lb ancient crossbow shot faster than 960lb medieval
by Fangbows Fri Mar 12, 2021 11:36 pm

» best type of horn to use..
by kenh Tue Mar 09, 2021 3:16 pm

» re-introduction
by tghsmith Sun Mar 07, 2021 3:15 pm

» 4 fletch question
by 8fingers Fri Feb 05, 2021 3:14 am

» fix bolts
by MPDVM Tue Feb 02, 2021 7:40 pm

» Reverse draw compound bow build
by c sitas Tue Feb 02, 2021 7:20 pm

» New Build for 2020
by Gnome Wed Jan 27, 2021 6:19 am

» Spanning bench ideas
by stuckinthemud1 Fri Jan 08, 2021 1:07 pm


4 posters

    Smaller or Larger?

    avatar
    Stonedog
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 108
    Join date : 2012-07-04

    Smaller or Larger? Empty Smaller or Larger?

    Post by Stonedog Tue Apr 02, 2013 4:32 pm

    OK, I have my tiller roughed out nicely and the nut mortise nicely done.

    Here is my dilemma:

    I used my 1 1/2" forstner bit for the nut mortise....and I am using a 1 1/2" diameter Delrin nut....so the mortise and the nut are the exact same size. This is problematic as we all know...

    So, I am at a cross roads....I can either make the mortise larger, which honestly makes me a bit uncomfortable as it is done so well.....

    OR

    I can slowly rotate the nut in 220 sandpaper until is just fits and rotates freely in the mortise...

    Thoughts? Ideas?

    Regeis
    Regeis
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 35
    Join date : 2013-02-01
    Age : 31
    Location : Inside your head.

    Smaller or Larger? Empty Re: Smaller or Larger?

    Post by Regeis Tue Apr 02, 2013 4:52 pm

    Delrin's not going to sand anywhere near as nicely as the wood... I'd increase the size of the hole. Get a dowel, glue a 'flap' of sandpaper around it, stick it into the chuck of your drill and use it to gradually widen the gap?
    mac
    mac
    Master Weaponsmith
    Master Weaponsmith

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

    Smaller or Larger? Empty Re: Smaller or Larger?

    Post by mac Tue Apr 02, 2013 5:13 pm

    Stone,

    You did not say that you have actually tried putting the nut into the mortice. Have you tried it, or is the problem still theoretical.

    If you do have to remove material, It would be more accurate to remove it from the nut if you can have a way of turning it on its axis.

    If you had to take it out of the mortice, you would want to wrap some sandpaper around a dowel that nearly fir the mortice. That way the action of the abrasive would be more or less evenly applied to the circumference.

    Mac
    avatar
    Stonedog
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 108
    Join date : 2012-07-04

    Smaller or Larger? Empty Re: Smaller or Larger?

    Post by Stonedog Tue Apr 02, 2013 5:17 pm

    Yes....I tried a trial fit (now that is a clunky bit of sentence!) and it simply is WAY too tight....

    I am also a fan of hand tools for delicate jobs...

    If I was to slowly to sand the delrin (I am staining it later) will it still be safe to use say if it is 1/16" less in diameter.

    I am not looking to do it quickly...only accurately and well done!
    mac
    mac
    Master Weaponsmith
    Master Weaponsmith

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

    Smaller or Larger? Empty Re: Smaller or Larger?

    Post by mac Tue Apr 02, 2013 5:34 pm

    I would shoot for closer tolerance than 1/16". Start with 1/64". You can always take more away if you have to, but you can't put it back on.

    Mac
    avatar
    kenh
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 846
    Join date : 2012-08-03
    Age : 73
    Location : Living Aboard a Sailboat in Fort Myers, FL

    Smaller or Larger? Empty Re: Smaller or Larger?

    Post by kenh Tue Apr 02, 2013 6:11 pm

    Yes it will be safe to use; it's the depth of the notches that count for safety. But I agree - just take a teenie tiny bit off - 1/64th. If it were me, I'd wrap the nut in a piece of 2000 grit sand paper (rough side out) and turningly work the nut back in the mortise.

    I'm not sure that Delrin will stain...

    Sponsored content

    Smaller or Larger? Empty Re: Smaller or Larger?

    Post by Sponsored content


      Current date/time is Sat Sep 18, 2021 7:12 am