Saturday, January 23, 2016

Body Assembly Fixture

Jan 23, 2016

The DVD from Stew-mac is mostly aimed at the kit you buy from them.  It is very expensive and misleading.  The title says, How To Build A Carved-Top Mandolin.  It should really say, How To Assemble Our Mandolin Kit.   There are some nuggets in there but if you really want to build a mandolin from scratch DVD is not very helpful.  There are no complete resources out there to actually build a mandolin from scratch.

 In Siminffs construction manual there are basically no instructions to build any of key fixtures or forms needed to actually build a mandolin.  It is a bit frustrating when you have to go on You Tube to supplement the book.

I ended up buying Siminoff's Pro Fixtures and templates drawings for about the price of his book.  In my opinion, why don't you just include these plans in the book and charge what you need.  We will buy it.  Just charge $75 if that's what it takes.  Just sell a complete book.  In the book they just say you will need to build a certain fixture.  They give you a few pictures and a few dimensions, but that is it.  I can figure most of them out, but what a pain in the ass when the book says Construction Manual.  That being said, I can appreciate the time and effort put into the book and plans and will pay extra to support a fellow artist.  Siminoff is a fantastic resource and I will probably buy most of my components from him.  I just think charge what you need and give us a complete book with plans....and please make a complete DVD for us. :)



I decided to start with building the Body Assembly Fixture first.  I went to Hope Depot and purchased a 3\4” piece of press-board to build my form out of.  They sell it in smaller sheets so you don't have to buy a full 4X8 sheet.  Plywood can be warped so I chose the press-board since the form needs to be level.  I do have quite a bit of hardwood at home but all of it is figured and I did not want to waste it on a form

I cut a 14’ X 18” piece and ripped it in half.  I then jointed the edges where they will joint in the middle.  I them traced the outline of the mandolin.



  

 I used the band-saw to cut the shape out on each half.





Once both halves were rough cut out on the band-saw I used my drill press as a sanding station to ease up to the line.





The points have to be hand filed where the sanding drums can't reach.




 I drilled four 5/16th  holes by clamping the pieces to my work bench and using a drill guide.  The challenge is keeping the holes strait on both pieces so the metal rods will go through both at a 90 degrees.  I bought two 5/16 threaded rods and knobs to hold my form together.  This will make it easier to remove the rim after gluing






I am only half way done.  I need to build the inside spreader cauls next.


. 

Thursday, January 14, 2016

Cutting the back and gluing the sound board



Jan 9th, 2016

I spent some time in the shop this weekend and decided to cut my piece of maple to shape.   The plank I have was about 2 1/4th.  I re-sawed it and now have two beautiful pieces to choose from.  I will eventually make a template out of Plexiglas,but for now I just traced the shape of the mandolin from a photo copy I made





Re-sawing




  Planing







 


  
 

  I also glued up the spruce top and will let it dry 24 hrs before I cut that one to shape.




Jointing the sides



Ready for gluing







 Next up is to make a form for gluing the rim.  I trip to Home Depot is in the plans for this weekend
                                







  

Wednesday, January 6, 2016

Jigs

Jan 6, 2016

This weekend I drove down to my dad's shop and had him help me build a wood bending iron.  They want over $200 for one online, so I decided to build one myself.  The great thing about a metal shop there is always scrap laying around.  We cut a piece of  2" X 12" 1/4"  stainless pipe and another sorter piece that is 1"x 5"x 3/16".  We had to drive to my cousins since his my dads welding table was covered in ice.  Thanks Chuck for the help.   We welded both pipes together then welded that to a chink of stainless plate with a 90 degree lip on one side.  The lip will work well for clamping the iron in a vise.  I will add a few more pics later.


 I also built a kerfing jig to fit my band saw.