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  #1  
Old 08-11-2019, 05:29 AM
GPV GPV is offline
 
Join Date: Apr 2019
Location: QLD, Australia
Posts: 47
Default Cutting Rudder Stiffeners

Hi All,.

I'm just about to cut my rudder stiffeners to size and was wondering if anyone has any tips before I go butchering them. How did you do yours?

Many thanks,

Greg
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  #2  
Old 08-11-2019, 06:08 AM
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mulde35d mulde35d is offline
 
Join Date: Dec 2017
Location: Lithia, FL
Posts: 217
Default Band saw

A band saw with a metal cutting blade was easy and accurate. I would highly recommend it.
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  #3  
Old 08-11-2019, 06:32 AM
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MS19087 MS19087 is online now
 
Join Date: Nov 2006
Location: West Chester, PA
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Default Bandsaw

Quote:
Originally Posted by mulde35d View Post
A band saw with a metal cutting blade was easy and accurate. I would highly recommend it.
Plus 1. Bandsaw!
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  #4  
Old 08-11-2019, 07:22 AM
DavidHarris DavidHarris is offline
 
Join Date: May 2018
Location: Upland, CA
Posts: 78
Default cutting stiffeners

Bandsaw works well. I had access to a sheet metal shop and could just punch out along the marked lines, which was even easier.

In either case, touch up the edges and remove the sharp corners with a scotch brite wheel afterward.

David
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  #5  
Old 08-11-2019, 07:41 AM
Steve Steve is offline
 
Join Date: Jan 2005
Location: Roy, Utah
Posts: 1,137
Default

I used the throatless shear in the sheet metal shop. I also had good luck using a heavy duty paper cutter like the one in the copy room at work.
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  #6  
Old 08-11-2019, 09:01 AM
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N804RV N804RV is offline
 
Join Date: May 2013
Location: Mount Vernon, Wa
Posts: 638
Default

I used a cut-off wheel on a RotoZip, then finished to size with a 3M 6" medium deburring wheel mounted on a bench grinder. Fast and efficient.

The el-cheapo bandsaw I bought from Homedepot was not up to the task.
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  #7  
Old 08-11-2019, 09:30 AM
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fl-mike fl-mike is offline
 
Join Date: Jul 2005
Posts: 1,331
Default

Not sure about the 14, the the 8 rudder stiffener trim length fit on my 6" corner notcher. I did all of them in about ten minutes with a resulting very clean cut. It was like "butter"! But of course you have to have a notcher handy. It can be a handy tool for small trim jobs and such. I found mine (Diacro) on Craigslist for cheap.
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  #8  
Old 08-11-2019, 03:24 PM
mturnerb mturnerb is offline
 
Join Date: Apr 2015
Location: Ponte Vedra, FL
Posts: 1,435
Default

Agree with others re using bandsaw. I shaped all these types of parts and also did much of the deburring of many other parts using a Harbor Freight buffer on a stand (https://www.harborfreight.com/6-inch...psugg_q=buffer, https://www.harborfreight.com/univer...=grinder+stand) and 6" scotchbrite wheels (I used two on my buffer - one finer, one more coarse. The coarse one is great for removing extra material from trimmed parts.

I like the buffer better than a grinder because the spindles are longer and there are no guards on the wheels - makes it much easier to position a part just right to work on it. It takes some practice to avoid damaging thinner parts (some thinner parts I just deburred using other methods).
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Last edited by mturnerb : 08-12-2019 at 04:06 AM.
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  #9  
Old 08-11-2019, 04:01 PM
GPV GPV is offline
 
Join Date: Apr 2019
Location: QLD, Australia
Posts: 47
Default

Thanks everyone, I'll give the bandsaw a go. Hopefully I can rig something up to keep the cuts straight. Dreading this job!
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  #10  
Old 08-11-2019, 09:37 PM
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tyconnell tyconnell is offline
 
Join Date: Jul 2007
Location: Keller, TX
Posts: 204
Default

Bandsaw - I created a jig:



I believe the clamp attached to the board is a toggle clamp.

I rounded the corners after cutting using the disc sander portion of a desktop belt sander, and finished with a Dremel 500 wheel. For flimsy parts like the stiffeners, I prefer this smaller wheel to the scotch brite wheel.
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