@wandrson, itâs beautiful. Since I know nothing about lutherie, how did you know the (approximately) correct length so it would tune properly?
You can tune properly with basically any length (given a reasonable range). For these first two dulcimer sticks I worked from plans in
http://www.amazon.com/Pickin-Stick-Building-Stringed-Instrument/dp/0764335715/ref=asap_bc?ie=UTF8
And these instruments use a 22.75" scale length, which is pretty close to standard for a mandolin sized instrument. The actual note is defined by a combination of factors; length, diameter, material, tension, etcâŚ
My next dulcimer stick is designed to use a 25.5" scale length and be tuned to a key of D (the one above is tuned to a key of G). It will be 2-3" longer then the above, with a wider and deeper sound box. It can use guitar or banjo strings (which are of similar size). This will be a little bit bassier.
After I finish I plan on making a mountain dulcimer, the one I am designing for now will have a 26-27" scale length and will use banjo strings.
The fret locations are a mathematical calculation, with many online calculators available. My favorite is https://www.stewmac.com/FretCalculator.html
3 piece spinning tops, A steel ball press fit into an aluminum stem, press fit into a brass ring. 1 inch in diameter.
Amazing! I want to get a edc top to play with, How hard is it to make one of these?
Im still learning, those are number 4 and 5 that I have made.
All said and done it takes me about 2 hours each, then because of in experience 1 out of 2 or one 1 out of three doesnât fit together properly or bends in the fitting process. I made 3 this week, and bent one, messed up the bearing in another, but one spins like a dream. Not all that difficult just a lot of learning, lot of reading about machining, a lot of video watchingâŚthen a lot of practice.
Different Feed rates, different RPM for different materials, different cutters, different speeds for different diameters etc.
Im going to have to sit down and watch this entire show
That was an amazing video Nick. You have to love a nation that can support a presumably 30 minute TV show concerning such a engineering based challenge. A spinning top that runs for nearly 19 minutes! That is an amazing piece of skill.
I donât think it was a fair comparison of design issues though. I suspect problem with the aerospace engineers top was execution, not design. With the machine shop top being produced by machinists with 30+ years of experience, I suspect it was just made better. What I would love to see is a design by the engineers produced by those machinists. I suspect it would outperform what each group was able to produce individually.
Maybe we should have such a competition at the space?
**_
WOOT! WOOT!
LOGO BIAS ALERT!!
WOOT!! WOOT!!
LOGO BIAS ALERT
The Blue Tape Team has been dispatched to cover this.
Sorry couldnât help myself.
Existing logo: Straight lines, right angles, and ratios that are easy to guess (turns out I only committed one small error when I finally found a sketch with the relative dimensions)
Foxy logo: Curves, complex shapes, and doesnât exist in a format I can import into CAD
It wasnât a hard choice. I spent more time tweaking the ârecyclingâ arrows than any other aspect of that piece.
Fixed: https://dallasmakerspace.org/wiki/File:FOX_logo_banner_dxf.zip
(Wiki doesnât allow dxf file types, so its a zip of the dxf)
Now I have options for the potential next release. Maybe Iâll up the inside baseball factor and show the dumpster on fire too.
+1 for dumpster fire.
Also I think we should paint flames on the dumpster. It makes cars go faster, therefore it should make pickups faster.
Started in March but completed in April⌠Here are some photos of the leather notebook cover I made by taking the class given by @morganntho! Super pleased with how this turned out! In the class we created our design file, laser cut the leather, then stained and learned how to stitch it together. I decided I wanted to âpaintâ my design with waterstain, and then used those colors on the interior pieces and kept the rest really natural looking. Thank you Morgan for teaching and inspiring us with this project!
Hereâs another image from the same photo shoot as the first post in this thread. It was with Brian (@brianbterry) and Ryan (@JRyan_Artist). If youâre interested in night photography or photography in general hit me up, there will be more photography outings in the future.
Let me know - Iâd be interested.