question on how to create triangle troughs with the CW

[lawrence]

Well folks, this one has me completely stumped.

I need to create "ditches" in the board that are 1/2 deep on one side and come up at a 45 degree angle to become level with the surface of the board... basically I need to be able to carve a 2 inch long right triangle trough into the wood.

Attached is a pic of what I'm talking about along with an MPC with my (head scratching) layout.

I'm really at a loss as to how to attack this problem-- I have at my disposal CorelDraw, Pattern Editor, Centerline, Conforming Vectors, and the DXF importer and have sleds that can hold the piece so that the edge is in a jig. I have all the standard bits at my disposal as well.

Could someone please explain to me how to create these "sloped troughs" in a piece of wood? I hope the answer is simple and that I'll feel stupid after this... Cleanliness of cut is important but not vital-- I can certainly (and probably will) clean up the carves with a sharp chisel.

Thanks a million in advance
Lawrence

[eelamb]

Lawrence, check out askbud site he has a video on Making a Triangle with a Gradient or Taper (http://www2.wcoil.com/%7Enharbison/CW-Making%20a%20Triangle%20with%20a%20Gradient%20or%2 0Taper.zip)

his site is http://www2.wcoil.com/~nharbison/cw-askbud%20downloads.htm

[dbfletcher]

I posted this in the other thread.. but will post here for completeness. Try the attached linear gradient. The verticle side will still have a 3.5 degree slpe because of the angle of the carving bit.. but it gets u close. I'll attach a sample on your mpc as well. I should probably mention that to resize the the gradient, you have to use the yellow middle nodes. If you try witht he red corner, it resizes proportionally.

[lawrence]

You guys rock-- thank you so much

Hopefully I'll have some fun projects to share soon

Lawrence

[fwharris]

Here is one possible way and will have to clean up the slope as it will be domed..

Apply a carve region to the rectangle, depth at .500

Select "surface" , apply right or left dome

set hight to .999

[lawrence]

Thanks so much guys-- this will get me to tinkering....

I hope to recreate a Roubo book stand

The project I am working on is one similar to this (I am making a couple of these now using only hand tools but will probably try to do a couple of dozen for next year's Christmas gifts as cookbook stands and ipad stands for those close to me that have them) The project just seems to scream out for some nice carving on it and I could see the idea blown up bigger and used as a bible stand or guestbook stand. The sky's the limit!

Here is a link to a video and a description (this is Chris Schwarz)
http://blog.woodworking-magazine.com/blog/Video+Roubos+Folding+Bookstand.aspx

A picture of the finished project is at the bottom of this blog page and can also be found in this month's popular woodworking mag (or Roubo's original plate/book from
Le Menuisier Ebeniste by AJ Roubo (1775)
http://blog.woodworking-magazine.com/blog/Darwin+Roubo+And+A+Sickening+Sound.aspx


ps- yes, doing it by hand is a lot of work, but I enjoy both tailed and non-tailed tools... I try not to be judgemental in either direction and feel just as at home with a 150 year old wooden jointer or rip saw in my hand as I do a router or mouse. They are in my mind all just tools to be used as vessels for creative juices!
Thanks again,
Lawrence