Search found 581 matches

by Jim McConkey
Mon Oct 08, 2018 3:37 pm
Forum: Jam Session
Topic: One of those offbeat ideas - a dust-collector-powered pipe organ?
Replies: 19
Views: 10207

Re: One of those offbeat ideas - a dust-collector-powered pipe organ?

It is, but DC used in connection with motors almost always refers to the power source. The whole point is spelling things out only takes 2 more seconds, but prevents a lot of confusion.
by Jim McConkey
Sun Oct 07, 2018 4:41 pm
Forum: Jam Session
Topic: One of those offbeat ideas - a dust-collector-powered pipe organ?
Replies: 19
Views: 10207

Re: One of those offbeat ideas - a d/c-powered pipe organ?

The "DC" here is "dust collector". Ah! That is why is we strongly recommend taking the time to spell out all but the most common abbreviations. Not only do different people use different abbreviations for the same thing and the same abbreviations for different things, but our foreign readers often ...
by Jim McConkey
Thu Oct 04, 2018 5:07 pm
Forum: Jam Session
Topic: One of those offbeat ideas - a dust-collector-powered pipe organ?
Replies: 19
Views: 10207

Re: One of those offbeat ideas - a d/c-powered pipe organ?

I don't know about this particular motor, but DC motors are used all the time in CNC machines with motor controllers with no problem. The controller are more of a fancy automatic speed control that constantly regulates the pressure as needed rather than a crude on/off switch.
by Jim McConkey
Thu Oct 04, 2018 1:41 pm
Forum: Jam Session
Topic: One of those offbeat ideas - a dust-collector-powered pipe organ?
Replies: 19
Views: 10207

Re: One of those offbeat ideas - a d/c-powered pipe organ?

How much air is needed entirely depends on the size and number of pipes. Have a look at this discussion on portative organs, which are small, easily carried organs. There is plenty of info on-line about making organ pipes. If you can find a suitable pressure gauge, it is always possible to put the D...
by Jim McConkey
Wed Sep 05, 2018 11:34 am
Forum: Other Stringed Instruments
Topic: Repair of Zither (Harp Mandolin) ??????
Replies: 106
Views: 51975

Re: Repair of Zither (Harp Mandolin) ??????

The other thing about new strings is that it takes a while for them to stabilize under tension. They will keep going flat for a while, so you have to keep retuning. From the scale on the front, the two adjacent strings should be the same note, so C and C, not C and C#. Just go over it once a day for...
by Jim McConkey
Thu Aug 30, 2018 1:54 am
Forum: Electronics
Topic: Transducer/Piezo Disc
Replies: 8
Views: 4929

Re: Transducer/Piezo Disc

Stew-Mac sells a Schatten soundboard transducer piezo disk. No idea if it is as good as a Fishman, but no doubt better than cheap Chinese ones. I have a Schatten, along with a Pick Up The World transducer on my cittern (wired to a stereo end jack). I definitely prefer the PUTW, but I don't think the...
by Jim McConkey
Mon Aug 20, 2018 12:45 am
Forum: Bowed Stringed Instruments and Bows
Topic: Wood Used on Crappy Violin
Replies: 12
Views: 13959

Re: Wood Used on Crappy Violin

Thanks, Bryan!
by Jim McConkey
Thu Aug 16, 2018 5:15 pm
Forum: Bowed Stringed Instruments and Bows
Topic: Wood Used on Crappy Violin
Replies: 12
Views: 13959

Re: Wood Used on Crappy Violin

A few years back I hacked a similar cheap Chinese violin to turn it into an electric skeleton fiddle (see my avatar) for our $100 Electric Contest. It wasn't even a decent acoustic fiddle, but does much better as an electric. That being said, it would probably be less work to just build the electric...
by Jim McConkey
Tue Jul 24, 2018 3:10 pm
Forum: Other Stringed Instruments
Topic: Repair of Zither (Harp Mandolin) ??????
Replies: 106
Views: 51975

Re: Repair of Zither (Harp Mandolin) ??????

Caley, if you read around the boards here, there are tons of stories where chisel slipped at an inopportune moment, something set a little off-center while gluing, and any number of other problems. These things happen to all of us, even the ones who won't admit it. But what you will also find here i...
by Jim McConkey
Mon Jul 23, 2018 2:11 pm
Forum: Tools and Jigs
Topic: sharpening?
Replies: 4
Views: 3555

Re: sharpening?

The blade on my peg shaver is held on by two end cap bolts, so the blade can be easily removed for sharpening with an Allen wrench. If your blade cannot be removed, you can use a variation on the Scary-Sharp sandpaper sharpening trick by getting some old pegs and gluing bands of various grits of san...
by Jim McConkey
Thu Jul 19, 2018 2:05 pm
Forum: Wind, Percussion, and Miscellaneous and Experimental Instruments
Topic: stainless steel as a material for a music box comb?
Replies: 6
Views: 11975

Re: stainless steel as a material for a music box comb?

There is another ongoing discussion on Kalimbas here, and the original video that spurred the project used steel electrician's fishing tape for the tines. It is probably stainless, and available at every DIY store. Also look for rakes with metal tines. they are usually about the right size, and ofte...
by Jim McConkey
Mon Jul 16, 2018 3:24 pm
Forum: Wind, Percussion, and Miscellaneous and Experimental Instruments
Topic: New to Music Instruments
Replies: 57
Views: 43908

Re: New to Music Instruments

Caley, without getting into the math, from the bass end each tine should be 0.9438743 times the length of its lower neighbor (assuming a chromatic instrument). For example, assuming your bass note is 100 mm (about 4"), the lengths going up should be 100.00, 94.39, 89.09, 84.09, 79.37, 74.91, etc. Th...
by Jim McConkey
Fri Jul 13, 2018 11:26 pm
Forum: Other Stringed Instruments
Topic: Repair of Zither (Harp Mandolin) ??????
Replies: 106
Views: 51975

Re: Repair of Zither (Harp Mandolin) ??????

To protect sides from the threads, pick up some 3/8" inner diameter poly-whatever tubing at Home Depot, then cut into pieces a little less than the thickness of your instrument. Place over the threaded rod between the spools. Since the clamps work with everything from fiddles to guitars, I keep a bu...
by Jim McConkey
Thu Jul 12, 2018 12:58 am
Forum: Wind, Percussion, and Miscellaneous and Experimental Instruments
Topic: New to Music Instruments
Replies: 57
Views: 43908

Re: New to Music Instruments

The only real difference between a chromatic and not-completely-chromatic version is the number of tines. Build whichever version you want. Once you learn to build and tune one tine, you know how to build all the rest.
by Jim McConkey
Wed Jul 11, 2018 12:48 am
Forum: Wind, Percussion, and Miscellaneous and Experimental Instruments
Topic: New to Music Instruments
Replies: 57
Views: 43908

Re: New to Music Instruments

You are correct that different materials will tune a little differently. In the video you originally referenced, his longest tine is about 5" (13 cm), based on the size of his hand. That is just a little longer than you found was the lowest practical pitch, probably because he is using rods and not ...
by Jim McConkey
Tue Jul 03, 2018 11:36 pm
Forum: Other Stringed Instruments
Topic: Repair of Zither (Harp Mandolin) ??????
Replies: 106
Views: 51975

Re: Repair of Zither (Harp Mandolin) ??????

Don't worry too much about steaming the joints. If there is any place you can gently work a knife in, the old glue usually literally pops apart with no water/steam. Just work around the edge slowly. If you have one of the small wire brush tools for the Dremel, it may clean up the lower 20% of your p...
by Jim McConkey
Mon Jul 02, 2018 9:00 pm
Forum: Wind, Percussion, and Miscellaneous and Experimental Instruments
Topic: New to Music Instruments
Replies: 57
Views: 43908

Re: New to Music Instruments

The only real use of the eye bolt is to tighten the tine down against its two supports, so the only place the eye contacts the tine is at the top. The inner diameter is irrelevant if it is big enough for the tine to fit through. The hardware store eye bolts will do that just fine, just be clunky. Lo...
by Jim McConkey
Mon Jul 02, 2018 2:20 pm
Forum: Wind, Percussion, and Miscellaneous and Experimental Instruments
Topic: New to Music Instruments
Replies: 57
Views: 43908

Re: New to Music Instruments

Look at his test jig at exactly 10:00 and the assembly process at 15:38. For anyone else following, we are talking about this video.

This style of eye bolt is available at Home Depot. It would do the job, but wouldn't be quite as pretty as the ones he used.
by Jim McConkey
Mon Jul 02, 2018 12:18 am
Forum: Wind, Percussion, and Miscellaneous and Experimental Instruments
Topic: New to Music Instruments
Replies: 57
Views: 43908

Re: New to Music Instruments

The video says he used M5 eye bolts. M5 is a metric size. There was no screw on top, like you drew. This bolt sat between the holder and bridge and the string went over the holder, through the eye bolt hole, then over the bridge. He tightened the bolt with a nut on the opposite end to secure and tun...
by Jim McConkey
Mon Jul 02, 2018 12:12 am
Forum: Other Stringed Instruments
Topic: Repair of Zither (Harp Mandolin) ??????
Replies: 106
Views: 51975

Re: Repair of Zither (Harp Mandolin) ??????

Have a look in our Library for discussions on spool clamps. They are easy and cheap to make. Think 2 sewing thread spools on a long bolt with a wing nut at the end. Go to Home Depot and get a bunch of 6" or 8" long 1/4" threaded bolts, and some matching washers and wingnuts. Also get a short piece o...