|Busker Building Hints
The best advice I can give is to look over the plans, watch the video, read
the comments on MMD, this and other web sites until you have an understanding
about how things are supposed to work. Not so much the exact details,
but the relationship between the various parts. Then you can think things
through at each step and make any adjustments that might be necessary.
Always keep in mind that the worst that can happen is that youll need
to re-make a part. No problem, you made the first one, the second one will
Here is a list of thoughts about building the organ:-
1. I used balsa and didn't really have any problems. I cut it with a razor
saw and steel ruler. A piece of sandpaper taped to a flat surface (I used
a 12" marble tile from the home center) is the only way to go for sanding
pipes and other small pieces. I saw some bass wood at a different hobby
store after I finished the pipes. If I'd seen it sooner, I might not have
used the balsa. I don't know about working qualities, but the bass wood does
look better. Coat the inside of the pipes with diluted yellow glue per the
instructions. I used chamois leather from a car chamois for the stoppers.
I also used little turned dowels for the handles on the stoppers. They look
more authentic than a plain bamboo stick. I also looked at the super glue
at the hobby store. Have not tried it yet, but it sure would be faster. There
is a lot of drying time with twenty pipes.
2. I found some 1/8" cherry at a local woodworking store. I used it for the
covers on the pipes. It looks very good.
3. I also covered the front of the 15 smaller pipes with maple veneer (because
you can see the glue joints on the front). The veneer looks great with the
4. I used leather for the bellows and reservoir. Glued on with fish glue,
excellent stuff. CPL gusset leather and fish glue from Columbia Organ Leather.
5. I used rubber tubing from player piano supply 1/4in and 5/16in, with brass
tubing from the hobby store. It looks much better than the clear plastic,
and I think it will last longer. Plastic tubing will turn brown and oily
eventually. Using brass nipples on each pipe makes it much easier to attach
and remove the rubber tubing. I used a small wood block like Ed Gaida shows
on his web site.
6. I made the crankshaft by gluing it together with lock-tite and then pinning
each joint. Looks good, no lumpy welding. This method is described on this
7. I used 1/4" birch plywood for the box. For the pressure box (and everything
else for that matter), make sure everything is as square as possible. On
the Universal, I've bought some maple ply with MDF core. Very flat and stable,
I think it going to work great, and it looks beautiful.
8. For the take up spool I used two pvc pipe couplers. I made three 3/4"
particle board disks. One fits in the center with epoxy to hold the two couplers
together. I have a metal lathe so I turned the finished plastic piece down
to the right size and trimmed it to length. The other two disks went in the
ends. For the flanges, I used two non-silvered blank CDs. Trimmed them
down to the right diameter and sanded them with a random orbit sander to
give them a nice cloudy finish. Blending the new with the old!
9. For making the several disk shaped pieces, it's hard to beat a simple
fixture on a disk sander. I'll try to describe mine. A square of scrap wood
about 10" square by 3/4" with a groove across it 3/4" wide by 3/8" deep.
Clamp the board on the sander table with the groove pointing toward
the disk. Then cut a piece of wood about 3/4" by 3/8" by about 18" long.
A nice sliding fit in the groove. Drill a hole near one end of the stick
for a small pin. It can be a wood dowel, but I use brass so I can turn the
diameter to the exact size I need. Rough out the disk to just over size.
Put it on the pin and slide the stick into the groove. Clamp a stop block
on the stick to control the size. Just slowly turn the disk against the sander
until it hits the stop. I added a screw in the end of the stop block for
fine adjustments. I've seen similar ideas in several woodworking magazines.