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by woodbuddha
Thu Jul 16, 2015 9:25 am
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

@chrisb: See responses below. I am not quite sure, if I understood it right, which format did you use to transfer to your CAM software? STL. And may I ask what software you use for CAM? DeskProto and CNC? UCCNC. It's like Mach3 but cheaper, nicer GUI and supports a USB interface (UC100). CAD model o...
by woodbuddha
Wed Jul 15, 2015 8:49 am
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

Thanks for all you help Mark. Couldn't have done it without you and the other experts on this forum. It's one of the best forums around.

Can't wait to see the Toolpath generation feature when it hits the ground.

WB
by woodbuddha
Tue Jul 14, 2015 4:42 am
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

Finally managed to get some real live fins made. What started as an idea and designed in FreeCAD is now a real thing. Field testing has been positive. Here's the link to the blog post for anyone interested. http://thewoodbuddha.blogspot.com.au/2015/07/cast-resin-elliptical-fins.html WB Fin Mould CNC...
by woodbuddha
Tue Jul 14, 2015 4:33 am
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

@westcoastguy I was having issues with the trailing edges of the bsplines as well and being the lazy knuckle dragging chimp that I am, I decided to stick with d-wires, so I never really resolved the trailing edge issue myself. But good to see the experts on this forum leading the charge. Designing t...
by woodbuddha
Mon Jan 19, 2015 2:45 am
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

Hi Florian,

Yes I get the same thing happening to the TE of my foils as well. How did you resolver the problem?

TK
by woodbuddha
Mon Apr 21, 2014 6:48 am
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

Thanks Guys. Problem solved with the changing the teselllation to 0.02%

WB
by woodbuddha
Wed Apr 16, 2014 9:43 pm
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

Hi Guys,

Any luck with this one?

TK
by woodbuddha
Fri Mar 28, 2014 7:48 am
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

Here are the NACA files.

TK
nacaairfoils.tar.gz
(1.47 KiB) Downloaded 63 times
by woodbuddha
Fri Mar 28, 2014 7:39 am
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

Hi Guys, Got another strange one for you all. I import a NACA symmetrical airfoil (e.g. 0012) from airfoil tools using Mark's macro as a Dwire. All is good. When I convert it to a bspline I get a flat spot on the bottom side of the airfoil. The strange thing is, that if I do a bspline conversion to ...
by woodbuddha
Sat Mar 22, 2014 1:05 am
Forum: Help on using FreeCAD
Topic: Designing a Surfboard Fin
Replies: 105
Views: 22403

Re: Designing a Surfboard Fin

Thanks guys. Your knowledge of free ad is awesome.

TK

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