Compound angle milling?

Home| Search | About
User Password
Register Now! Lost Password?

General Metalworking - All aspects of working with metal. 

Bookmark this page:  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Compound angle milling? Terry Keeley 03-28-2008
Posted by Terry Keeley on March 28, 2008, 9:59 am
Please log in for more thread options
 I want to mill a 10* angle on the leading edge of a skid fin for my model
boats. The lead angle of the fin is 30* and I need the 10* "wedge" parallel
to the water line so the fin doesn't cause lift.

I think there's compund angles involved but I just can't see the setup,
here's some pix of what I'm trying to do:

http://gallery.intlwaters.com/displayimage.php?album=988&pos=0

http://gallery.intlwaters.com/displayimage.php?album=988&pos=1

Here's what it looks like in action:

http://gallery.intlwaters.com/displayimage.php?album=988&pos=2

The fin is that bit hanging off the right front sponson.

Any ideas?




Posted by steamer on March 28, 2008, 12:13 pm
Please log in for more thread options
         --Well the two things that come to mind are grinding it freehand
(the way surfers make fins) or making a mold with that shape already in it.
Neither one is trivial, but it's a whale of a lot easier than trying to mill
that kind of shape without a cnc..

--
"Steamboat Ed" Haas : Dare me to
Hacking the Trailing Edge! : make less sense...
www.nmpproducts.com
---Decks a-wash in a sea of words---

Posted by Jim Wilkins on March 28, 2008, 12:29 pm
Please log in for more thread options
> I want to mill a 10* angle on the leading edge of a skid fin for my model
> boats. =A0The lead angle of the fin is 30* and I need the 10* "wedge" para=
llel
> to the water line so the fin doesn't cause lift.
=2E..
> Any ideas?

How about drawing a line on the part parallel to water flow and
tilting that line to 10 degrees?

It might be easier to place a 10 degree angle gauge on the line and
level the top.

Jim Wilkins

Posted by Terry Keeley on March 28, 2008, 11:30 pm
Please log in for more thread options
Thanks for the reply's guys, not sure I follow though...


> I want to mill a 10* angle on the leading edge of a skid fin for my model
> boats. The lead angle of the fin is 30* and I need the 10* "wedge"
> parallel
> to the water line so the fin doesn't cause lift.
...
> Any ideas?

How about drawing a line on the part parallel to water flow and
tilting that line to 10 degrees?

It might be easier to place a 10 degree angle gauge on the line and
level the top.

Jim Wilkins



Posted by Steve Walker on March 29, 2008, 9:53 pm
Please log in for more thread options
Terry Keeley wrote:
> I want to mill a 10* angle on the leading edge of a skid fin for my model
> boats. The lead angle of the fin is 30* and I need the 10* "wedge" parallel
> to the water line so the fin doesn't cause lift.
>
> I think there's compund angles involved but I just can't see the setup,
> here's some pix of what I'm trying to do:
>
> http://gallery.intlwaters.com/displayimage.php?album=988&pos=0
>
> http://gallery.intlwaters.com/displayimage.php?album=988&pos=1
>
> Here's what it looks like in action:
>
> http://gallery.intlwaters.com/displayimage.php?album=988&pos=2
>
> The fin is that bit hanging off the right front sponson.
>
> Any ideas?
>
>
>


Is this like a knife edge, or just 10 degrees on one side? By 10 degrees
parallel to the waterline, I assume you mean the angle intersecting the
waterline is to be 10 degrees included.

--
Steve Walker
Fusion640@verizonwallet.net (remove wallet to reply)

Similar ThreadsPosted
compound angle July 27, 2007, 8:17 pm
What is your technique for seting lathe compound at a precise angle? August 4, 2007, 3:18 pm
Setting Lathe compound at precise angle, a Real Keeper!!! August 5, 2007, 12:16 pm
Cracked Bridgeport Right angle milling attachment April 1, 2007, 2:47 am
FA: hydraulic pump, right angle gear drive, very heavy caster, Oil pump from large milling machine April 26, 2006, 1:29 am
fractured compound June 25, 2007, 10:51 pm
Clausing Compound May 28, 2008, 12:00 am
9x20 Compound Clamp September 18, 2007, 4:57 pm
Craftsman/Atlas 6" MkI/MkII compound August 4, 2006, 11:51 am
Silicone caulk as a molding compound? February 14, 2007, 1:35 pm

Contact Us | Privacy Policy

XML SitemapXML Sitemap