Toy Sword Blade - shape design help

[Tilarta]

I'm working on a 3D model for a action figure sword accessory, but can't figure out how to make the blade shape I am trying to create:

DBSsampleDesign01rs.png (64.12 KiB) Viewed 1557 times

DBSsampleDesign02.png (26.4 KiB) Viewed 1557 times

The wedge shape will make the correct object shape when viewed from the front, but I don't know how to put a triangular prism on the edge of the blade to make the sharp cutting edge.

Does anyone know how I might design the shape I am intending to create?

[bejant]

Hi Tilarta, and welcome! There are many examples in the forum; do a search for "knife" or "sword" ("blade" will return a bunch of airfoil topics). Here are a few topics to get you started:
https://forum.freecadweb.org/viewtopic.php?f=3&t=16674
https://forum.freecadweb.org/viewtopic.php?f=3&t=36279
https://forum.freecadweb.org/viewtopic.php?f=3&t=13510
https://forum.freecadweb.org/viewtopic.php?f=3&t=30349

[Willem]

Welcome to the forum, I made a sword that is approximately what you want. Study the file and ask questions if you need some more explanation

[kisolre]

I made a sword that is approximately what you want.

Clever use of chamfer and fillet for the edge. I should remember that But mapping sketch to datum plane that is mapped to a face is the same as mapping the sketch to that face directly - does not avoid toponaming issues.
More robust solution is mapping to XZ plane and shifting it with expression linked to Pad001 length:

[Tilarta]

Thanks for the help everyone.

I decided to go with the simplest approach, Boolean Cut.
But I haven't gotten it quite right yet:

DBSsampleDesign03.png (10.27 KiB) Viewed 1486 times

When I performed the Cut Operation, it missed the lower edge of the blade near the pommel and didn't create the edge along the full length of the blade.

Is there a way to move the Cut Objects so they align along the entire length of the blade?
I tried changing the angle, but it just rotated the object away from the blade.

[kisolre]

Could you please attach the actual file you are working on so it could be examined and proper suggestions made?

[Tilarta]

Here is the most recent version of my sword file:

DBSword.FCStd

(14.15 KiB) Downloaded 30 times

[kisolre]

You can map the prisms to the edges of the blade. Select prism. Select its Map mode and press the 3 point button. As first selection select lower vertex of the corresponding blade edge. Second selection should be that edge, mapping mode - Z tangent to edge.

PrismMapping.JPG (84.03 KiB) Viewed 1458 times

[Tilarta]

I got the lower half of the blade shaped.
But ran into a problem when trying to shape the upper half:

DBSsampleDesign04.png (10.44 KiB) Viewed 1400 times

It didn't quite mesh neatly.

DBSword02.FCStd

(55.42 KiB) Downloaded 28 times

[papyblaise]

hello
A superb pirate sword