Thanks for that Rohan.
Thanks to all involved on this project.
Had these boxes printed as a test and it seems they should work.
Futures fins are very snug fit, FCS centre fin will need a shim for thickness of tabs.
I'm guessing screws will hold side FCS fins in place with cant.
Can I sand off the top lip and then install under lamination, which is my preferred method?
As I usually have lots of vee, can the side FCS fins be shimmed and will the screws hold the fin vertically in the box, as the vee will provide the cant?
Sure you can sand the tops down and install before the lamination. Just dont sand down too much past removing the raised form around the fin slot and the impressed lettering, and be careful about what depth you then set them at to ensure you can get the full adjustment of the FCS fins forward and aft if you want that.
There should be room to shim the side FCS fins if you want less angle on them when fitted. They sit in an angled cavity and require the side force of the screws to hold them there properly so shimming should be easy if thats want you want. You should be able to check this after you've sanded the tops down and before they're fitted to the board.
Thanks RDM, so from your earlier post I could take a max of 1.5mm off the top surface, after the lip?
That would allow for a cloth layer over the box in laminating.
Yep. Here's the section detail so you can see a bit better how much leeway you have. The dimension shown is 3.5mm.
It's probably best to take off no more than 1.0mm if you can.
Or can we go back to having the hangers on each end ?
The hangers take the guess work out of how much to sand and how low or high to install.
wowuld you guys prefer to have the hangers as an accurate guide to installing ?
Hey Surffoils. We ditched the hangers because one of the basic types of 3D printers doesn’t cope well with constructing them.
But I can easily make another version of each with hangers for those using suitable 3D printers.
Just tape off the opening and the holes then glass over. Hotcoat and sand. Why would you sand the lip off first? Its just like a futures install
My concern would be that the box has no natural indicator whether it is installed too shallow, too deep, or somewhere between.
Hangers show if too shallow and prevent too deep (other than pooling resin) but do not accurately indicate within range.
If there could be a mark or chamfer or something to measure, could the install be gauged? Or print an install gauge?
Just thinking out loud before morning coffee...
Be safe, have fun. -J
JRandy, that’s what I thought about hangers, without them you don’t know if it’s too shallow or too deep, and they make great pivot points for cant. With the hangers you drop it in and it’s an exact height., i also like taking a great idea from FCS that’s stood the test of time.
I don’t think having a range of depths is needed , just one repeatable level is easiest I think.