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Author Topic: Cutting notches into frames.  (Read 3868 times)

Billyruffian

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Cutting notches into frames.
« on: May 31, 2011, 09:27:03 am »
What techniques / tools do you use for cutting neat notches into frames for stringers.  I am just trying my first diagonal planking build and am having difficulty in getting neat notches cut into 1/8" ply.

Thanks
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dreadnought72

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Re: Cutting notches into frames.
« Reply #1 on: May 31, 2011, 09:51:38 am »
1/8th ply would say "Stanley knife" to me: with a finish from a square file. Much easier to do, of course, while the frames are not set up and free to be cut on a mat.
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Roadrunner

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Re: Cutting notches into frames.
« Reply #2 on: May 31, 2011, 09:56:39 am »
Sharp chisels can do the job with out need for a hammer, i have a set with varying sizes, the smallest i have is a 2mm edge, a Stanly blade can also work just press harder!

Clean up edges with files, wet and dry, or drum sander on your multi tool.
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John W E

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Re: Cutting notches into frames.
« Reply #3 on: May 31, 2011, 10:35:03 am »
Hi there my mate

Best not use a Stanley knife or a chisel to cut the notches out.   It will tend to split the plywood if you do it this way.   Best use a fine toothed razor saw blade such as those made by X-Acto - you can mark the depth of the notch by placing a bit of electricians' tape on the side of the saw blade to prevent you cutting too deep.  

Have a look on the Whaleback build on this forum, it shows you an example of how it was done on all of those frames.    You finish off with a fine square file.

The Whaleback has a nice new abode now, to a fellow Forum member.  :}

http://www.modelboatmayhem.co.uk/forum/index.php?topic=9758.0
Aye
john
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Billyruffian

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Re: Cutting notches into frames.
« Reply #4 on: May 31, 2011, 11:41:07 am »
Thanks John just what I wanted.  I got the depth OK with a fine saw but just wasn't sure about removing the waste.

One of your magic pictures is worth a thousand words.

The RTTL is beginning to look OK now the stringers are going in - following your Whaleback build and you RTTL 2551 build.

Thanks again
Cyril :-))
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CF-FZG

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Re: Cutting notches into frames.
« Reply #5 on: May 31, 2011, 08:09:15 pm »
Permagrit do 'spar' slotting tools - available in 3mm and 6mm thicknesses :-))

They do various excellent sanding tools, files, cutting discs and other stuff - check them out at http://www.permagrit.com/  the 'slotting' tools are here http://www.permagrit.com/

These tools are very popular in the fullsize andmodelling community, but I've not seen them mentioned around here {:-{


Mark
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RaaArtyGunner

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Re: Cutting notches into frames.
« Reply #6 on: May 31, 2011, 10:18:01 pm »
Bluebird,
Well presented, simple solution, shades of woodworking background ?  :-)) :-))
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