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[PeterH]

just having trouble with AKU software so I will check out your design next week at work
And yes DMshapes are doing it for Mick Fanning, first we are going to make a few more test boards then DMS will make a couple for Mick to try out. really looking forward to it.

[PeterH]

Steve
Yes it will fit but you need to work on the deck curve a bit, open this file in Shape3d and zoom in on the deck so you can what I mean Peter

[Steve Franklin]

Steve
Yes it will fit but you need to work on the deck curve a bit, open this file in Shape3d and zoom in on the deck so you can what I mean Peter

Thanks Peter - but I can't see the attachment

[PeterH]

Steve
I mean you to open your file in Shape3d and check out the deck curve so you can see the fault in the deck curve. One day Aku may have a system so you can zoom in and check your curve,s
Peter

[Steve Franklin]

Steve
I mean you to open your file in Shape3d and check out the deck curve so you can see the fault in the deck curve. One day Aku may have a system so you can zoom in and check your curve,s
Peter

Hey Peter,
See what you mean - I checked the deck curve in Shape3d - there was a hump in front of the control point. I had to open and save the file in boardcad before Shape3d would read it, maybe it was corrupted in someway. I made a new file from scratch - had to do this one on my Mac - I can't seem to get anything Java based running in Vista since I ran a Java upgrade last night. Assuming you can machine cut this board - where would the stringers be in relation to the outline? and how thick would the PU foam be in the deck? Also what would this board weigh with a bottom skin of 2.5 oz 1.5 mm balsa and 4 oz on the bottom and 4 oz on the deck? Maybe Huie can answer the last question.

[soulvoid]

Hey Peter,
See what you mean - I checked the deck curve in Shape3d - there was a hump in front of the control point. I had to open and save the file in boardcad before Shape3d would read it, maybe it was corrupted in someway. I made a new file from scratch - had to do this one on my Mac - I can't seem to get anything Java based running in Vista since I ran a Java upgrade last night.

The reason for the bump is most likely the really short tangent at the nose. Basically the curve from the nose to center control point had a very different curvature from the curve from tail to center. Always check the curvature to avoid these problems, the curvature should be as close to continuous as possible at all control points if you want nice and flowing lines. If you want a sharp break in the curve (like hips) never mind.

Java has been acting up on a number of systems lately, the fix seems to be to uninstall all and everything related to java and reinstall the latest java. This will free up a bit of space on your HD as well as each update is approx. 120 MB...

[huie]

  hey steve i cant even open that i have been akud'' good & proper
 i am  going to have to take the time & get rid of the pesky barstard

[Steve Franklin]

The reason for the bump is most likely the really short tangent at the nose. Basically the curve from the nose to center control point had a very different curvature from the curve from tail to center. Always check the curvature to avoid these problems, the curvature should be as close to continuous as possible at all control points if you want nice and flowing lines.

Thanks soulvoid The short tangent tip is a good one. But where do I check curvature in akushaper? or are you talking about boardcad or shape3d (which are on my Vista powered laptop with the dodgy JRE)

[PeterH]

Steve  your files deck is made from the thickness and the bottom curve, change this so the deck is its own curve. do this by going to  Board -then Prop -then design mode - bezier curve and make sure the centre point is on the straight hands, then just work the hands until you get the curve fixed. There is nowhere in AKU to check the deck curve like in Shape3d one day they will have. Zoom in on the deck curve so you can see that you are working the hands in the correct way to fix the problem, use the wire frame screen to do this. All the boards I have made with the blank so far have been 2.1kg ready to surf. But I only glass the bottoms and so far used no wood skins, Huie will know about the weight.
Saving AKU files in boardcad is the correct way to convert them to Shape3d, AKU tried to change the format so time ago but boardcad fixed it for all to use. Have fun Peter 

[soulvoid]

Thanks soulvoid The short tangent tip is a good one. But where do I check curvature in akushaper? or are you talking about boardcad or shape3d (which are on my Vista powered laptop with the dodgy JRE)

Yes, I'm talking about boardcad or shape3d. Why on earth they have not implemented that in aku is a mystery to me. They don't seem to care about the GPL license for the source code of boardcad as they have basically taken the file reader for the surfcad file format and plugged it straight into aku without complying with GPL or mentioning anything about copyright for the code, so why they haven't taken the code to show a simple curvature or implemented it themselves is a bit strange really... You would think that that should be piece of cake with a professor in mathematics on the team.

[Steve Franklin]

Steve  your files deck is made from the thickness and the bottom curve, change this so the deck is its own curve. do this by going to  Board -then Prop -then design mode - bezier curve and make sure the centre point is on the straight hands, then just work the hands until you get the curve fixed. There is nowhere in AKU to check the deck curve like in Shape3d one day they will have. Zoom in on the deck curve so you can see that you are working the hands in the correct way to fix the problem, use the wire frame screen to do this. All the boards I have made with the blank so far have been 2.1kg ready to surf. But I only glass the bottoms and so far used no wood skins, Huie will know about the weight.
Saving AKU files in boardcad is the correct way to convert them to Shape3d, AKU tried to change the format so time ago but boardcad fixed it for all to use. Have fun Peter 

Thanks for the tips Peter.

Rolled back to the previous JRE and now everything works again. Used the wireframe in Shape3d to get the points aligned so the curves flow together - AKU has a nice 3d feature but although I can see bumps in my shape I can't figure out how to fix them - Shape 3d does this a lot better.  Here's the result in Shape3d.

I'm really keen to test one of these blanks but I'm not really clear on how the cdd blank works. Is it essentially a high density blank with a 1# eps core? i.e the HD foam covers the whole board, or is only the deck and rails covered in HD foam? Does the blank have perimeter stringers built in or do you have the slice the rails off and glue them in? Also how much HD foam is in the rails? you or Huie can PM me answers if any of this is sensitive - I'm not trolling for tech secrets  - just need to know a bit about the properties of the blank so I can build a successful board.   

Cheers,
Steve