Model Boat Mayhem

Technical, Techniques, Hints, and Tips => Tutorials & "How To’s" ... => Topic started by: Billyruffian on May 31, 2011, 09:27:03 am

Title: Cutting notches into frames.
Post by: Billyruffian 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

Title: Re: Cutting notches into frames.
Post by: dreadnought72 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.

Title: Re: Cutting notches into frames.
Post by: Roadrunner 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.

Title: Re: Cutting notches into frames.
Post by: John W E 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

Title: Re: Cutting notches into frames.
Post by: Billyruffian 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 :-))

Title: Re: Cutting notches into frames.
Post by: CF-FZG 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/ (http://www.permagrit.com/)  the 'slotting' tools are here http://www.permagrit.com/ (http://www.permagrit.com/)

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


Mark

Title: Re: Cutting notches into frames.
Post by: RaaArtyGunner on May 31, 2011, 10:18:01 pm

Bluebird,
Well presented, simple solution, shades of woodworking background ?  :-)) :-))