Recreating a WW2 Army Equipment Nameplate - SCR-284 Part 4 скачать в хорошем качестве

Recreating a WW2 Army Equipment Nameplate - SCR-284 Part 4

This is the fourth in a series of videos covering the repair and restoration of a WW2-era SCR-284 radio set. In this video, I fabricate a replacement nameplate for the radio set's hand-crank generator. Warning: all dimensions, quantities, and process times are approximate. Work with chemicals and tools at your own risk. Always wear protective equipment and dispose of waste properly. Do not attempt without professional supervision. Process details: 1. Laminate a piece of 20 gauge zinc plate with dry film photoresist. 2. Mask with artwork transparency (recommend two identical laser printed layers), then expose for 2 minutes to a 6W UV light fixture at a distance of about 18in. 3. Remove clear protective layer of film, then place exposed plate into a solution of 6g washing soda and 200mL water. Develop for 3 minutes 15 seconds, with periodic gentle agitation of the plate surface by gloved fingertip. Rinse plate thoroughly. 4. Cover unmasked sections of plate with tape, then etch in a solution of 25g copper sulfate pentahydrate and 200mL water for 22 minutes, with periodic gentle scrubbing by a toothbrush. Rinse thoroughly. 5. Remove tape and immerse plate in a solution of 10g lye and 200mL water until the photoresist is released. Rinse thoroughly. Take precautions to avoid chemical burns from lye. 6. Cut to shape and drill mounting holes. 7. Paint as desired. Avoid using alkyd-based paints on zinc. 8. Sand raised sections to remove paint and expose bare metal. Optionally, apply a vinyl mask to the painted area to prevent it from being scratched during sanding. 9. Stamp serial number, then coat with amber shellac to emulate WW2-era MFP coating. 10. Weather and age as desired. Materials: Stock - https://www.rotometals.com/030-zinc-s... Dry film photoresist - https://www.amazon.com/gp/product/B07... Exposure lamp - https://www.amazon.com/gp/product/B07... Paint - https://www.montanacolors.com/en/prod... Shellac - https://www.rustoleum.com/product-cat... Subscribe to keep up to date on historical military restoration projects, with a focus on the Second World War. New videos are always in development, including more amateur radios, field gear, and other military technology. If you have an idea/request, you are welcome to leave it in the comments! See https://github.com/wartimeworkshop/BC... for custom hardware plans. Music: Piano Sonata No. 11 in A major, K. 331, III. Alla turca - Wolfgang Amadeus Mozart Recording by Garsų Menė (https://audiojungle.net/user/garsumene) Acknowledgements: G503 Military Vehicle Forum - https://forums.g503.com/ - special thanks to user "g504" for providing historical reference photographs NYC CNC -    • How to Make Ink Fill Brass Machine Plates!...   Gogo:Tronics - https://sparks.gogo.co.nz/dry-film-ti... Jackson's Art - https://media.jacksonsart.com/pdf/Etc... Friedhard Kiekeben - https://www.nontoxicprint.com/etchzin... Tiger Lily Press - http://tigerlilypress.org/2011/01/exp... K4CHE's Website - http://www.k4che.com/SCR-284/SCR-284%... N6CC's Website - https://www.n6cc.com/scr-284-radio-set Radionerds SCR-284 entry - https://radionerds.com/index.php/SCR-284 Scanned user manuals - http://www.radiomanual.info/ MicaMold capacitor restuffing instructions - https://antiqueradios.com/forums/view... Carl's M37 Website - https://web.archive.org/web/202105132... [EDIT: Carl has updated his website to include a reference to the channel. Thank you so much, Carl, for your kind words and involvement in the community!] 00:00 - Intro 00:14 - Artwork Capture 00:42 - Photoresist 01:13 - Etching 01:52 - Metalwork 02:17 - Color Fill 02:37 - Stamping & Coating 02:51 - Installation Made in 2022 by Wartime Workshop.