| DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
|---|
| 9C40.00 | Other | | |
| 9C40.10 | cheese dish demonstration collection | AJP 42(10),914 | Eighteen demonstrations of the "string and sticky tape" style that use a cheese dish. |
| 9C40.15 | microspheres | AJP 34(12),xvi | Small hollow glass bubbles ranging from 10 to 270 microns. |
| 9C40.15 | steam trap spheres | AJP 31(12),xiv | Use floats for steam traps in electrostatics demos. Available from 1 1/2" to 6" diameter. |
| 9C40.15 | plastic balls, hemispheres,etc | AJP 29(8),iv | Sources for plastic balls, hemispheres, and styrofoam balls (1961). |
| 9C40.15 | hollow stainless balls | AJP 31(9),xi | A source of hollow stainless balls from 5/8" to 10" diameter. |
| 9C40.17 | labeling cables | AJP 34(8),iii | Use ordinary white paper and heat shrink tubing. |
| 9C40.17 | stranded tungsten wire | AJP 29(11),xiv | Stranded tungsten wire from GE for use in vacuum metalizing. |
| 9C40.19 | spinning thin metal | AJP 34(5),ix | Use a teflon plug at the end of a spinning tool. |
| 9C40.19 | bluing steel by heat treatment | AJP 34(5),x | Form a good corrosion resistant surface by heating to 299 C and quenching in mineral oil. |
| 9C40.20 | constant torque devices | AJP 30(11),xvi | Constant torque devices for providing constant tension to strings and cords in recording instruments. |
| 9C40.20 | springs for harmonic motion | AJP 31(11),xv | Wind
springs from #22 piano wire 1 cm diameter, 5-6 cm long for spring constants
about 100,000 dyn/cm. Source: Hunter Springs, also make constant force springs. |
| 9C40.20 | modified mass hanger | AJP 40(12),1876 | The masses don't fall off this mass hanger. |
| 9C40.20 | hooked weights | AJP 30(4),310 | How to make small hooked weights out of lead. |
| 9C40.22 | graphite-woven furnace fabric | AJP 29(12),xvi | Graphite cloth heating elements can release 1 Kw / sq in. Sources for the cloth and furnaces. |
| 9C40.23 | cercor ceramic structure | AJP 29(11),xiii | A thin walled cellular ceramic from Corning Glass that withstands 1000 C and great thermal shock. |
| 9C40.23 | braided glass sleeving | AJP 30(10),xv | This sleeving is suitable for insulating wires in high vacuum systems. |
| 9C40.24 | soft solder to tungsten wire | AJP 34(10),xvi | To soft solder a tungsten wire, first properly tin it. |
| 9C40.24 | soldering refractory metals | AJP 38(6),776 | A method for coating tungsten, molybdenum, and tantalum with brazing metal before soldering with rosin core solder. |
| 9C40.25 | plastic drive belts | AJP 34(12),xv | A method for joining the ends of vinyl or Tygon tubing to make endless belts. |
| 9C40.25 | modification of tesla leak tester | AJP 36(3),x | Add a pushbutton switch on the side of the probe. |
| 9C40.25 | polyester film belts | AJP 34(5),ix | Make an endless belt of mylar by stretching a cut circle. Also, splicing various polymers. |
| 9C40.26 | heat shrink tubing | AJP 29(9),xviii | Insulating tubing that shrinks on heating. |
| 9C40.26 | teflon spagetti tubing | AJP 30(7),vi | Describes thinwall teflon tubing. |
| 9C40.28 | nylon fasteners | AJP 30(5),x | Source of fasteners made from nylon 6, a special cold flow plastic. |
| 9C40.30 | flexible rubber magnet | AJP 30(1),xvii | Quarter inch flexible magnet supports 40 g/inch. |
| 9C40.30 | ceramic ring magnets | AJP 29(8),iii | Source of ceramic ring magnets (1961). |
| 9C40.33 | gallium-indium eutectic | AJP 28(8),x | 75% gallium - 25% indium (by weight) freezes at 15.5 C and wets many semiconductor surfaces making low-resistance ohmic contact. |
| 9C40.35 | electroplating tape | AJP 34(7),viii | Scotch brand pressure sensitive tape for electroplating works well for masking surfaces to be etched. |
| 9C40.35 | liquid insulating tape | AJP 30(8),vi | Paint this stuff on instead of using tape. |
| 9C40.35 | vinyl foam tape | AJP 35(2),xix | Foam tape with adhesive on both sides is more compliant than double sided tape. |
| 9C40.36 | epoxy to steel balls | AJP 35(7),iv | Clean steel ball bearings before using epoxy to fasten on a hook. |
| 9C40.36 | conducting epoxy | AJP 30(5),x | Electrically conducting epoxy announcement. |
| 9C40.36 | modified epoxy resins | AJP 31(2),xi | Recipes for sand loaded epoxy, Cab-O-Sil loaded with note about stirring to destroy thixotropic property. |
| 9C40.36 | silicone rubber adhesives | AJP 30(7),vi | Some data on RTV. |
| 9C40.36 | plexiglass adhesives | AJP 31(1),xiv | A three component plexiglass cement, or moisten with chloroform and clamp. |
| 9C40.36 | more glues | AJP 31(4),xiv | Rez-n-glue for styrofoam. 3M EC-1368 thermosetting adhesive. 3M AF-42 can be cut to shape, clamped, and cured. |
| 9C40.36 | conducting epoxy cement | AJP 29(9),xviii | Silver filled epoxy cements, source and data. |
| 9C40.36 | epoxy seals in GM tube construction | AJP 29(12),xv | Anyone can make GM tubes with this simple method. |
| 9C40.36 | epoxy dispenser | AJP 34(12),xvi | Mix epoxy and catalyst in a disposable syringe and then dispense. |
| 9C40.37 | white lubercating compound | AJP 30(8),vi | A compound that lubricates to 1100 C and is a grease from -40 to 140 C. |
| 9C40.38 | high temperature paint | AJP 30(1),xviii | An aluminum pigment paint for use between 500 and 1000 F. |
| 9C40.38 | pressure sensitive paint | AJP 30(1),xviii | Pressure sensitive electrically conductive paint can be used between conducting surfaces to make pressure transducers. |
| 9C40.40 | spandle for glassblowing | AJP 30(4),xiii | A tool designed to simplify straight butt, T and V joint seals, and joining capillaries. |
| 9C40.40 | nonwetting glass surface | AJP 35(7),iv | L-45, a silicone fluid from Union Carbide, makes glass nonwetting to aqueous solutions. |
| 9C40.40 | polish for acrylic and aluminum | AJP 29(12),xvi | X-109 polish (Chem-X Inc.) works well on plastics. |
| 9C40.40 | low radioactivity glass | AJP 28(8),x | Corning Glass has a low radioactivity glass available in early 1961. |
| 9C40.40 | low temperature solder glasses | AJP 30(2),xv | Some data on Schott solder glasses. |
| 9C40.40 | fused quartz products | AJP 30(6),vi | Fused quartz springs, pans, fibers, and other products are available from the Worden Laboratory (1962). |
| 9C40.40 | IR optical materials report | AJP 28(7),xiii | A report listing the optical and physical properties of fifty materials for use in IR optics. |
| 9C40.40 | large glass tube cutter | S-3h | Loop a wire around a glass tube, heat it red hot electrically, pour on cold water. |
| 9C40.41 | dry ice chest | AJP 32(4),xvi | Line a plywood chest with 4" of styrofoam. |
| 9C40.41 | dry ice from fire extinguisher | AJP 34(12),xv | Discharge a fire extinguisher into a space covered with a towel. |
| 9C40.41 | foam liquid nitrogen container | AJP 33(12),1090 | Use a large foam bowl for a cheap unbreakable container. |
| 9C40.45 | epoxy resin leak sealant | AJP 34(3),xxx | The Varian Associates "Torr-Seal". |
| 9C40.45 | transparent electroconductive coatin | AJP 28(7),xiv | Pointer
to Rev.Sci.Instr.31,344(1960). Apply a thin oxide film to lead glass with
a resistance of 350 ohms/square, light transmittance of 75%. |
| 9C40.50 | radioactive source | AJP 31(5),362 | Irradiate sodium iodate 2hrs to get a radioisotope with a half-life of 25 min. |
| 9C40.60 | determining EFL | AJP 42(3),254 | A simple string method for determining the equivalent focal length of a lens. |
| 9C40.60 | making curved slits | AJP 43(12),1111 | How to make slits for a double-prism non dispersive premonochromator. |
| 9C40.60 | mobile optical table | AJP 44(3),310 | A 3' x 4' aluminum plate with 2" hole spacing. |
| 9C40.60 | micropositioners | AJP 29(4),xiv | There are micropositioners available for optics. |
| 9C40.60 | making high quality pinholes | AJP 49(1),88 | A short discharge from a pointed to a rounded electrode through a thin metal foil produces some nice pinholes. |
| 9C40.60 | making spatial filters | AJP 35(5),x | A spark from a tesla coil makes a hole in carbon paper or thin metal foil. |
| 9C40.60 | making multilayer dielectric mirrors | AJP 40(2),294 | Techniques for making multilayer mirrors tuned for HeNe laser work. |
| 9C40.60 | eyepiece illuminator | AJP 41(1),138 | Construct an inexpensive Gauss eyepiece illuminator from a neon pilot light in a block of aluminum. |
| 9C40.60 | cheap laser spirograph | TPT 28(9),606 | Small DC motors with front silvered mirrors mounted on the shafts are use to make a cheap spirograph. |
| 9C40.61 | poor man's optical bench | AJP 33(6),504 | Make a cheap optical bench out of round bar stock. |
| 9C40.61 | fabricating triangular optical bench | AJP 29(2),x | A 5/8" hexagonal bar stock mounted on a 1 7/8" hexagonal bar stock gives a bench similar to the Zeiss design. |
| 9C40.64 | electrothermal thermocord | AJP 30(7),vi | A flexible heating cord good to 450 C at 5 W/inch. |
| 9C40.65 | resistor oven | AJP 32(4),xv | Hollow wire wound resistors can be used as small ovens (insert mercury thermocouple for calibration of thermocouple). |
| 9C40.65 | simple linear heating rate oven | AJP 36(4),x | Design of a small oven. |
| 9C40.65 | furnace for growing metal crystals | AJP 32(9),679 | A simple furnace for growing metal crystals has produced a single crystal of aluminum 2" in diameter and 5" high. |
| 9C40.66 | low-cost spot welder | AJP 32(1),xiii | Copper tongs, a six volt car battery, and some components are used to make this spot welder. |
| 9C40.66 | spot welder | AJP 32(10),xiv | Schematic for a simple condenser-discharge spot welder. |
| 9C40.70 | interograph for integrals and areas | AJP 52(5),468 | An interograph that produces both definite and indefinite integrals. |
| 9C40.70 | gauge blocks | AJP 28(8),x | Different nonstandard uses of gauge blocks, including feeling the attraction between two. |
| 9C40.70 | profilometer | AJP 56(9),857 | A shop drawing of a profilometer that is inexpensive, accurate, and can be computer interfaced. |
| 9C40.80 | cheap lab jack | AJP 40(11),1706 | Modify a scissors type axle jack by adding metal plates top and bottom. |
| 9C40.80 | adjustable platform | AJP 37(4),456 | A simple adjustable platform that rides on two vertical rods. |
| 9C40.81 | pressure cell - 350 bar | AJP 36(2),ix | Draw up some epoxy into a 0.05 ml Microliter syringe to seal the bottom and lubricate the plunger with light vacuum oil. |