Forums Calendar Active Threads
October
S M T W T F S
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
Who's Online Now
5 members (Karl Graebner, Mike Harrell, eightbore, Lawrence Kotchek, 1 invisible), 685 guests, and 6 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums10
Topics39,547
Posts562,608
Members14,592
Most Online9,918
Jul 28th, 2025
Previous Thread
Next Thread
Print Thread
Page 3 of 3 1 2 3
Re: Action pin clearances ...
2-piper #239604 08/17/11 01:50 AM
Joined: Feb 2004
Posts: 13,883
Likes: 19
Torrance, CA
Chuck H Offline
Sidelock
***
Offline
Chuck H
Sidelock
***

Joined: Feb 2004
Posts: 13,883
Likes: 19
Torrance, CA
Originally Posted By: 2-piper
I worked in a machine shop for 35 yrs. In all those years I never had to drive in a dowel pin when the hole was reamed with an .0005 oversize reamer. Most dowels run to about a +.0002 for nominal size. Reaming one hole with the nominal size & the other with the +.0005 reamer establishes which side the dowel stays in & which side it "Slips" in & out of.The dowel could be tapped into the one remed with the standard & would slip freely in the one reamed +.0005. If you had to drive a dowel in a hole reamed +.0005" you must have been using a worn out reamer. You can about throw it through a hole reamed to +.001"


+1 on what Miller said. The part about a .001" oversize being pretty big is especially true when the pins are down in the 3/32" to 5/32" range.
Re: Action pin clearances ...
Chuck H #239606 08/17/11 02:42 AM
Joined: Apr 2004
Posts: 507
Mid Wales United Kingdom
eugene molloy Offline OP
Sidelock
**
OP Offline
eugene molloy
Sidelock
**

Joined: Apr 2004
Posts: 507
Mid Wales United Kingdom
Again, than you gentlemen, very enlightening.

Eug

Thank you, very kind. Mine's a pint
Re: Action pin clearances ...
eugene molloy #239660 08/17/11 09:30 AM
Joined: Sep 2007
Posts: 244
Denver, Colorado
shinbone Offline
Sidelock
*
Offline
shinbone
Sidelock
*

Joined: Sep 2007
Posts: 244
Denver, Colorado
Oh well . . . maybe we had old reamers and/or crappy dowel pins.

--shinbone
Re: Action pin clearances ...
eugene molloy #239962 08/18/11 06:58 PM
Joined: Apr 2005
Posts: 1,698
Likes: 46
Midlands,England,Great Britain...
Salopian Offline
Sidelock
**
Offline
Salopian
Sidelock
**

Joined: Apr 2005
Posts: 1,698
Likes: 46
Midlands,England,Great Britain...
Eugene,
Maybe this will answer your question.
The Modern Gunsmith by James Virgil Howe Vol 1 page 257

'the tolerance required on all running fits on all cylindrical parts in gun work is between 0.0003 and 0.0005 inch'

Myford seminars begin next week.
Re: Action pin clearances ...
eugene molloy #240003 08/19/11 03:53 AM
Joined: Apr 2004
Posts: 507
Mid Wales United Kingdom
eugene molloy Offline OP
Sidelock
**
OP Offline
eugene molloy
Sidelock
**

Joined: Apr 2004
Posts: 507
Mid Wales United Kingdom
Quote:
Myford seminars begin next week.

Pierre, we look forward to it. I've part assembled the beast (came in several large lumps for transport purposes) and have only to fit the motor. This last together with its cast iron mounting plate and countershaft bracket weighs around 120 lbs and is a decidedly awkward shape.

All the other bits I've lifted and manoeuvred single handed using methods straight out of Pharoah's Handbook, but the motor is a lulu. I should have paid more attention to the millwrights when I was a yoof.

Eug

Last edited by eugene molloy; 08/19/11 04:01 AM.
Thank you, very kind. Mine's a pint
Page 3 of 3 1 2 3

Link Copied to Clipboard
Forum Rules · Mark All Read Contact Us · Forum Help · doublegunshop.com - home

doublegunshop.com home | Welcome | Sponsors & Advertisers | DoubleGun Rack | Doublegun Book Rack

Order or request info | Other Useful Information

Updated every minute of everyday!

Copyright (c) 1993 - 2024 doublegunshop.com. All rights reserved. doublegunshop.com - Bloomfield, NY 14469. USA These materials are provided by doublegunshop.com as a service to its customers and may be used for informational purposes only. doublegunshop.com assumes no responsibility for errors or omissions in these materials. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANT-ABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. doublegunshop.com further does not warrant the accuracy or completeness of the information, text, graphics, links or other items contained within these materials. doublegunshop.com shall not be liable for any special, indirect, incidental, or consequential damages, including without limitation, lost revenues or lost profits, which may result from the use of these materials. doublegunshop.com may make changes to these materials, or to the products described therein, at any time without notice. doublegunshop.com makes no commitment to update the information contained herein. This is a public un-moderated forum participate at your own risk.

Note: The posting of Copyrighted material on this forum is prohibited without prior written consent of the Copyright holder. For specifics on Copyright Law and restrictions refer to: http://www.copyright.gov/laws/ - doublegunshop.com will not monitor nor will they be held liable for copyright violations presented on the BBS which is an open and un-moderated public forum.

Powered by UBB.threads™ PHP Forum Software 7.7.5
(Release build 20201027)
Responsive Width:

PHP: 7.0.33-0+deb9u11+hw1 Page Time: 0.122s Queries: 25 (0.095s) Memory: 0.8178 MB (Peak: 1.9020 MB) Data Comp: Off Server Time: 2025-10-29 20:47:27 UTC
Valid HTML 5 and Valid CSS