Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 57 users online :: 3 registered, 0 hidden and 54 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

cutting dovetails?

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
Sponsored 
  • Author
    Message

cutting dovetails?

Unread postAuthor: urgle the danish cow » Sun Feb 19, 2012 5:45 pm

i want to put sights on a long term project that is being machined out of aluminuim but how do i make the rails? im not 100% sure on how to cut it. could someone explain? what dove tail tool do i need(idk if there are different types). thanks sorry i didnt know where to post this
  • 0

User avatar
urgle the danish cow
Sergeant Major
Sergeant Major
 
Posts: 176
Joined: Sun Jul 26, 2009 4:48 pm
Reputation: 0

Unread postAuthor: Gippeto » Sun Feb 19, 2012 6:12 pm

Do you want "dovetails"...which are typically 3/8" (11mm) wide...some are larger (CZ) as no "standard" truly exists...or Weaver/Picatinny (not quite the same...but close)?

http://www.google.ca/search?tbm=isch&hl ... l0.4.3l7l0

http://www.biggerhammer.net/picatinny/1913_specs.pdf

I've used a HSS dovetail router bit to cut grooves in steel recievers. Router bits work REAL well on aluminum. Not truly the "proper" angle, but it works well none the less.
  • 0

"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
Gippeto
Donating Member
Donating Member
 
Posts: 2393
Joined: Sat Jan 19, 2008 10:14 am
Location: The Great White North...Canada eh!
Reputation: 11

Unread postAuthor: urgle the danish cow » Sun Feb 19, 2012 6:45 pm

so 11mm wide will fit a scope? and you seemed to imply that there was a better way of mounting a sight. is there?
  • 0

User avatar
urgle the danish cow
Sergeant Major
Sergeant Major
 
Posts: 176
Joined: Sun Jul 26, 2009 4:48 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Mon Feb 20, 2012 1:33 am

Just buy some pre-made rails and bolt them on :)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Zeus » Mon Feb 20, 2012 3:27 am

I concur with JSR and Gippeto, Picatinny rails are the way to go, 11mm rails aren't the simplest option, just tap the receiver and bolt the rails on.

A lot more "tacticool" items are for Picatinny rails, and I daresay you might want tacticool later on.

Although tacticool is fun, f*** Magpul
  • 0

/sarcasm, /hyperbole
User avatar
Zeus
Major General
Major General
 
Posts: 1422
Joined: Tue Oct 27, 2009 7:34 pm
Location: 'Straya, C*nt
Reputation: 2

Unread postAuthor: Gippeto » Mon Feb 20, 2012 8:01 pm

urgle the danish cow wrote:so 11mm wide will fit a scope? and you seemed to imply that there was a better way of mounting a sight. is there?


If you purchase scope rings that are for a "dovetail", they'll fit a dovetail cut to match. CZ makes rings for their stuff...believe it's actually 13mm.

Picatinny is wider, and would seem to be more stable. As Jack suggests, you can buy ready made picatinny rail that simply bolts on any flat surface. If needed, a radius can be machined on the underside of the rail to match the curvature of the receiver.

Ebay is a convenient source of this stuff.

I quite prefer Weaver/Picatinny over "dovetail" if it's an available option.
  • 0

"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
Gippeto
Donating Member
Donating Member
 
Posts: 2393
Joined: Sat Jan 19, 2008 10:14 am
Location: The Great White North...Canada eh!
Reputation: 11

Unread postAuthor: urgle the danish cow » Tue Feb 21, 2012 5:58 pm

alright well for one of my projects i know that that will work. but the other one i was planning on milling the dovetails right onto the think steel air chamber. to do this with the pre made rails would i drill and tap holes for the rails bolts to screw into the air chamber. what would be the best way to seal those threads? teflon tape? i want better seals then that so would i have to epoxy or would it be possible to solder the screws into the steel chamber?
  • 0

User avatar
urgle the danish cow
Sergeant Major
Sergeant Major
 
Posts: 176
Joined: Sun Jul 26, 2009 4:48 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Gippeto » Wed Feb 22, 2012 12:18 am

You should not do such things to a pressure vessel IMNSHO.

Perhaps consider something along these lines to mount the rail.

Image
  • 0

"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
User avatar
Gippeto
Donating Member
Donating Member
 
Posts: 2393
Joined: Sat Jan 19, 2008 10:14 am
Location: The Great White North...Canada eh!
Reputation: 11

Return to Construction Materials/Ammo Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Yahoo [Bot]

Reputation System ©'