Letters

“I now see why I get such terrible results with my coil. It is full of booby traps right down to the plans themselves. The booby plans came from (name withheld). They charge outrageous prices for their parts, too. I think your newsletter is excellent and very educational. It is great that audience participation is encouraged. Everyone can get a lot out of your publication whether they be an engineer, technician, or high school student. Thank you for the helpful tips.” (Suzanne Gaeta)

“your newsletter is a real good balance of the old and the new with great advertising. Keep up the good work and thanks again.” (Richard Hull)

“I must say that after studying all the newsletters to date, I feel as though I have spent the last few years vainly attempting to reinvent the wheel...I'm back at the drawing board and hope to start construction.” (Alfred Croix)

“I appreciate your willingness and ability to expose and discourage those groups that are unAmerican, bigoted, extreme, or pseudo-scientific.” (Bob Larsen)

“Your publication is fantastic! You deserve an award for making the public aware as to just how great Mr. Tesla was. With your continued efforts, perhaps he will be restored to his rightful place in history.” (Chris Boothe)

“In regard to making your own large dial plates for a variac (TCBA NEWS, Volume 6, #4), 3M brand photosensitive materials will produce remarkable results. Dynamark Brand Imaging Systems are available from 3M Automotive Systems Division, Building 223-1S-02, 3M Center, St. Paul, MN 55144-1000.” (Ken Elliott)

“Sign me up for another year. TCBA is well worth the price - interesting projects, interesting people. WOW!” (Lance Jerale)

“The newsletter Volume 8, #4 is great, as usual, especially the article on the double Tesla coil.” (John Curtin)

“Thanks for the excellent articles, first rate guality with which you regularly produce the NEWS. I cannot imagine a year going by, let alone a guarter, without an issue.” (Herb Balfour)

“A concerned customer, to whom we are grateful, drew our attention to an opinion expressed in your newsletter by correspondent T.J. Butkus. I feel it is necessary to correct the impression generated by this opinion.

“The name CENCO is a trademark of Central Scientific Company and has been in continuous use since about 1915. This company continues to be actively engaged in business and to supply CENCO products primarily to the educational marketplace.

“The disappearance of the Tesla coils from this market is largely due to student safety concerns, coupled with the natural development of the curricula at educational institutions.

“Although Knott products have not been available since before World War II, both Cenco and Welch products continue to be available from their respective manufacturers, and I shall be grateful if you will publish this letter in a subseguent issue of TCBA News so that your readers are properly informed of this situation. Thank you for your cooperation.” (D. Martin Taylor, President, Central Scientific Company, 11222 Melrose Avenue, Franklin Park, IL 60131-1364)

Advertising

SALE: ROTARY SPARK GAP PARTS: 1800 RPM synchronous motors for synchronous rotary spark gap (4 available), rotary spark gap rotors with 18 electrodes, dynamically balanced to 6500 RPM. Please state your motor shaft size when calling. Resonance Research (608) 356-3647

SALE: WIRE, 2 kv PVC insulated, tinned, 20 ga AWG stranded (any length) 4¢ per ft. plus UPS. Tubing, high density PVC for secondary coils (42" X 12.5" X 3/16th"), some at 48" lengths. $30 plus UPS (money order only) Dennis Lubing, P.O. Box 1685, Lake Oswego, OR 97035

WHERE TO BUY: Plans for Tesla coils, high voltage, and other scientific projects, some kits also offered. Catalog available from COMPONENT PARTS, 230 Hampton Pkwy, Kenmore, NY 14217. Please mention that you saw it in TCBA NEWS.

SALE: MODERN MECHANIX & INVENTIONS magazines (13) for years 1936-37, condition from good minus to good plus. All for $10 plus $3 shipping. Send for my book & magazine list. TCBA, RR6 Box 181, Glens Falls, NY 12801