University of San Diego
Department of Engineering

MENG 351:  CAD and Machine Shop Practice

Asst. Prof David Malicky







Some files are large; download before opening is suggested (right click, then "Save Link As...")

Printout your assignment and bring to lab.  

Lab Partners & Assignments -- Read this first to see what lab you will do, then read that assignment (below).
                                              For Lathe and Mill groups, fill out the Operations Sheet(s) before lab and bring to lab.  

Lathe and Mill lab assignments -- also see the Operations sheets.
    Air Engine drawing (Autocad 2000 format) (jpgs are in the doc file, above.  This is the original dwg if desired.)  Updated 10.21.06

Woodshop lab assignment #1.

Sheetmetal lab assignment #1.  Also see the Grizzly Sheetmetal Brake Manual, below.

Operations Sheet (blank)

Operations Sheet Example


Pictures -- Lab, Beam crushes, Air-Engines.  Just the jpgs.  Hope to do the video in January.  

Guitar Fret Position Calculator (and a little music theory for why it works) -- MS Excel
You can make frets from wire (see me if you need some, or use coat hangers).  
Saw a shallow and even groove where the fret should go, then glue in place. 
Or, you can just pencil mark the frets on the neck and use it as a slide guitar (below).  

How to Tune your Guitar:
If you want the easiest possible way to play, I suggest making it a slide-guitar.  Tune your strings so they form a major chord, which means the lowest string is the fundamental (e.g., C), the next string is a major 3rd above (e.g., E), the next is a 5th above (e.g., G), and if you have a fourth string, tune it to an octave above (e.g., C').  So, C-E-G-C' works, as does any other Root-Major3rd-5th-Octave combination.  Many songs only use major chords, but if you want more flexibility, try tuning to C-G-C'  (or any Root-5th-Octave):  this will not differentiate major from minor.
To play a slide guitar, you'll need a slide: a metal or glass cylinder, tube, bottle, or bolt as the slide.  The slide is placed on the strings above the desired fret. You only need pencil lined frets, to know where to put the slide.  The slide will define the contact point as a node and the string will vibrate between it and the bridge.  
http://en.wikipedia.org/wiki/Slide_guitar

If you have a 6 string guitar, or want to play your 3-4 string like a standard guitar, the standard tuning is E-A'-D'-G'-B''-E''.
The first three intervals are all 4ths (5th fret).  Then the G-B interval is a major 3rd (4th fret).  Then the B-E' intervals is another 4th (5th fret).  
To achieve this 2 octave range, you will need real guitar strings with wire-wound base strings (extra weight for low notes).
A google on "guitar tuning" will bring up a number of sites; this one has reference tones:
http://www.8notes.com/guitar_tuner/
 
Note that nylon strings slowly stretch (viscoelastic relaxation) for the first week or so, so you need to retune until they are stable.
If you go with steel strings, I suggest using Lights or Extra Lights, to not strain the neck too much.



Grizzly 12x36 Lathe Manual (our lathes are "Birmingham", but they are ~identical to the Grizzly).  

Grizzly Sheetmetal Brake Manual


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