 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
| HomeDiscussion GroupsBoatsPaddle BoatsSailingCruisingBuildingElectronics Related Topics CarsMotorcyclesMore Topics ... |
Boat Forum / Building / August 2006scarf jig
I am building an Arch davis design Penobscot 14 and I am at the point to scarf plywood for the panels. I am hoping there is a jig design to cut the scarfs on 1/4" plywood. I have seen jig for circular saws, but I hoping there is a system to use with a laminate trimmer or a router for cleaner cuts. Any help would be greatly appreciated. > I am building an Arch davis design Penobscot 14 and I am at the point > to scarf plywood for the panels. I am hoping there is a jig design to > cut the scarfs on 1/4" plywood. I have seen jig for circular saws, > but I hoping there is a system to use with a laminate trimmer or a > router for cleaner cuts. Any help would be greatly appreciated. Check the Gougeon Bros. They offer an attachment for a circular saw. Lew Our own Glenn Ashmore developed a perfectly elegant scarph jig which used a router and a long straight bit. I've shamelessly copied it. Glenn- I recollect that there were photos. > I am building an Arch davis design Penobscot 14 and I am at the point > to scarf plywood for the panels. I am hoping there is a jig design to > cut the scarfs on 1/4" plywood. I have seen jig for circular saws, > but I hoping there is a system to use with a laminate trimmer or a > router for cleaner cuts. Any help would be greatly appreciated. Yeah. The only picture of the router jig is about half way down on the Cabin Top page http://www.rutuonline.com/html/cabin_top.html . With a 2" straight bit on a 9:1 slope it will scarf up to quarter inch plywood. Any thicker than that and I resort to the power plane and belt sander method. With the thin ply lines of marine okoume and meranti as a guide it is fairly easy to cut an even scarf by eye on any thickness with 5 or more plys. The trick is to keep the ply lines straight and not to cut into the edge of the face veneer or the joint will show to much. and have gaps.  SignatureGlenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com > Our own Glenn Ashmore developed a perfectly elegant scarph jig which used > a [quoted text clipped - 6 lines] >> but I hoping there is a system to use with a laminate trimmer or a >> router for cleaner cuts. Any help would be greatly appreciated. Mark, The concept of the Gougeon 'saw device' and Glenn's router jig are 'really neat' from an 'engineering solution' point of view. However, unless you have a trailer load of ply, or an 'in situ' piece, they are also in opposition to another engineering principle - 'The K.I.S.S. Principle'. Especially of you are using 1/4in material. Even a half-dozen sheets are only about the thickness of a standard door. It's only a few minutes work to mark and lay them down, 'stair-step' fashion, across a couple of heavy-duty sawhorses {I have a self-made pair with '2x6' top beams}. You can even adjust to the 'rate of angle' you prefer - 12-to-1 being preferred for thinner goods. Clamp them together, with a caul, setting the forward edge flush with the forward edge of the horse's top beam, and go at it with a plane. A decent, SHARP, Jack of about 9 to 10 inches does nicely. {I have a handy, 'straight-line' belt sander and just got an electric planer, but so far haven't had to resort to Glenn's method}. Maybe 15 minutes of comfortable work {ever held a router or circular saw up at an angel, free-hand . . . even not running ??}gets the job done. I may even give a few swipes with some course sandpaper on a block, just to give the mating surfaces some 'bite'. Regards, Ron Magen Backyard Boatshop > I am building an Arch davis design Penobscot 14 and I am at the point > to scarf plywood for the panels. I am hoping there is a jig design to > cut the scarfs on 1/4" plywood. I have seen jig for circular saws, > but I hoping there is a system to use with a laminate trimmer or a > router for cleaner cuts. Any help would be greatly appreciated. >Even a half-dozen sheets are only about the thickness of a standard door. >It's only a few minutes work to mark and lay them down, 'stair-step' >fashion, across a couple of heavy-duty sawhorses {I have a self-made pair >with '2x6' top beams}. Good technique but you have to be aware of how the face sides will match up after the scarph when you are stacking the sheets. |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2010 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.