Wood fins foiling and glassing.

Well, I have been lurking for quite some time, and I am back at the board building and have a few questions. I have searched the archives but have come up a little short on answering my questions. plus some of the pics from the old threads are now missing. so here goes, forgive me if this is repetitive!

I am getting ready to foil a rising sun fin I made for the HWS I am working on.  I want the clear halo around the fin, and know it is done with roving, but does anyone have any tips for accomplishing this?  

do I foil the fin put on one side glass, place roving, add other side glass, re foil?  does this all work with epoxy? I say this because I am going to epoxy the board, should I epoxy the fin the same way I have seen people do with polyester?

 

thanks in advance,

Dave

Hey Dave, a while back TSaunders posted his method of building a bead using lam resin instead of roving. Works great.

http://www2.swaylocks.com/node/1026430

nice!  that is a great tutorial!  thanks for posting the link! it raises more quesions. 

 

do you think that can be done with epoxy?  or would this be best done with poly?  which brings up another question, if I do it with poly, how do I lam the fin onto the board, will the epoxy I am lamming the board with stick to the poly on the fin?

 

Dave

[quote="$1"]

nice!  that is a great tutorial!  thanks for posting the link! it raises more quesions. 

 

do you think that can be done with epoxy?  or would this be best done with poly?  which brings up another question, if I do it with poly, how do I lam the fin onto the board, will the epoxy I am lamming the board with stick to the poly on the fin?

 

Dave

[/quote]

Anything you can do with poly, you can do with epoxy. However, it'd be cheaper to use poly on the fin. Yes, you can glass over poly with epoxy, just make sure that the surface you're glassing is prepped and ready for glassing. When I've done wood fins in the past, I glass them, sand them, then glass 'em on. 

right on!  thats a reassuring push! 

thanks!

so I foiled the fin per Tsaunders and austin's advice, went to get my left over poly resin and it is dead.  the lady in the local fiberglass supply house (that I have had some luck with in the past and is pretty reasonably priced) had no idea what I was talking about when I asked for "Laminating resin"... "you know polyester resing without surfacing agent...?"   she made it sound like all that they sold was finishing resin.  Unfortunately I am not blessed by having surfing supply places local... although we have 3-rivers nobody is surfing them, so they wouldn't survive in Pittsburgh.

 

so here is my choice...

I don't have time to order it up with shipping etc... should I just use the epoxy I have in the same manor that Troy and Austin do... use finishing resin that I can get from the local supplier, or bite the bullit and go to the local boat store that does have lam resin, and pay $34 for a quart of lam resin and do it as they do?

 

oh another option, go to said supplier and talk to someone who knows what they are talking about!?!

 

thanks again for the input and opinions, I will post pictures of this project in a bit...

 

Dave

Woodwrkr,

In the balsa era, when I was ''coming up'' ALL glassing, hot coating, fin attachment, and gloss, was done with the same resin.   Richold finishing resin.    So you can proceed, with poly, if you wish.    I wasn't expose to lam resin until 1960.    It made life easier, for sure.    Good luck on your project.

Bill,

thanks!  Does that mean when doing a build up of resin I will need to sand between? 

 

Austin was almost casting the resin bead around the fin with lam resin... in the tutorial he said to do it in 3 pours... I was worried about the regular finishing resin having that waxy film that I would have to sand before the next pour.   Or should I pour the second and third before the first completely kicks to avoid having to sand?!?  

 

I appreciate your help, I am not that experienced with glassing, and your advice is respected and appreciated!

 

Dave

here is a pic of the fin prior to foiling. 

 

[IMG]http://i45.photobucket.com/albums/f61/brungeman/wood%20work/DSCF0580.jpg[/IMG]

 

I am happy with it, but think it could have swept back a bit more, so I will keep working on the D-fin shapes till I get the right......... "stance" I guess you could say.

 

Dave

Yes, to your question about sanding.     There are some techniques, involving timing of application, that bypass sanding, but as a newby, I don't recommend them.    Go slow, sand betweem applications, and you'll do fine.

[img_assist|nid=1044734|title=cedar &oak|desc=|link=none|align=left|width=640|height=480]glassed with epoxy

 

 dont ask why i left the bits of wood on the bottom

d fins were not always the exact same shape

**depends were you  made it
**

hey  bill  we should swap tales sometime.

 

       building surfboards late fiftys in queensland was far different  wasnt realy condoned by my elders’’ haa

**would off loved to be on yourside off the planet in those days.
**

Yep, beers on me.     I almost moved to Q'land, 1965, under the influence of Kenny Adler, who was touring the US at the time.   Met him at Hansen.   Did you know him?

very nice!  beautiful choice of woods and pattern!

 

thanks for the input!

dave

               yea  but that mob from haydens were the opposition’  haaa

hes got a surf ski factory on goldie   heres his e mail

sales@surfskisgoldcoast.com

My fins foiling days are almost over but Im slowly working on a parallel twin single based on BT's model.

 The idea came from the end of the single fin evolution back in the 80's

[IMG]http://i153.photobucket.com/albums/s225/SURFFOILS/wiameabay5ft8in1981.jpg[/IMG]

[IMG]http://i153.photobucket.com/albums/s225/SURFFOILS/horan_port_h.jpg[/IMG]

[IMG]http://i153.photobucket.com/albums/s225/SURFFOILS/cheynecrawfordt.jpg[/IMG]]

This one below sat in a surfshop in Manly for about 5 years just being moved around the shop floor.

[IMG]http://i153.photobucket.com/albums/s225/SURFFOILS/Lazer20Zap.jpg[/IMG]

 I've seen all these boards in the flesh and I thought why not make a few replicas from the fin templates of the original fins I took at the time.

 So I stuck 3 pieces of random ply together with a sheet of carbon fibre in between.

[IMG]http://i153.photobucket.com/albums/s225/SURFFOILS/ZF1.jpg[/IMG]

 I'd forgotten how subtle the foiling process is..

[IMG]http://i153.photobucket.com/albums/s225/SURFFOILS/ZF7.jpg[/IMG]

 But slowly the layers appear and the carbon layers make a good contrast.

[IMG]http://i153.photobucket.com/albums/s225/SURFFOILS/ZF91.jpg[/IMG]

 I'll whack a few layers of cloth over the lot at the end but I now remember how much fun it is to foil wooden fins.

 Worth the effort and its quicker than foiling glass fin blanks. IMO.

surffoils—

 

what is that called? a rake fin??

 

looks puuurrdy :slight_smile: