Wartime Workshop
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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 - www.rotometals.com/030-zinc-sheet-20-gauge/
Dry film photoresist - www.amazon.com/gp/product/B07MMVPY1Z/
Exposure lamp - www.amazon.com/gp/product/B07YGN2QGL/
Paint - www.montanacolors.com/en/productos/graffiti-water-based-300-aerosol-paint/
Shellac - www.rustoleum.com/product-catalog/consumer-brands/zinsser-products/woodcare/bulls-eye-shellac
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 github.com/wartimeworkshop/BC-654 for custom hardware plans.
Music:
Piano Sonata No. 11 in A major, K. 331, III. Alla turca - Wolfgang Amadeus Mozart
Recording by Garsų Menė (audiojungle.net/user/garsumene)
Acknowledgements:
G503 Military Vehicle Forum - forums.g503.com/ - special thanks to user "g504" for providing historical reference photographs
NYC CNC - czcams.com/video/68-QAwB8TdI/video.html
Gogo:Tronics - sparks.gogo.co.nz/dry-film-tips.pdf
Jackson's Art - media.jacksonsart.com/pdf/Etching_zinc_with_copper_sulphate.pdf
Friedhard Kiekeben - www.nontoxicprint.com/etchzincsteelaluminum.htm
Tiger Lily Press - tigerlilypress.org/2011/01/experimenting-with-saline-sulfate-etc/
K4CHE's Website - www.k4che.com/SCR-284/SCR-284%20%20Part1.htm
N6CC's Website - www.n6cc.com/scr-284-radio-set
Radionerds SCR-284 entry - radionerds.com/index.php/SCR-284
Scanned user manuals - www.radiomanual.info/
MicaMold capacitor restuffing instructions - antiqueradios.com/forums/viewtopic.php?f=6&t=197257
Carl's M37 Website - web.archive.org/web/20210513210933/dodgem37.com/radio-set-scr-284/
[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.
zhlédnutí: 2 868

Video

WW2 Hand Crank Generator Restoration - SCR-284 Part 3
zhlédnutí 17KPřed 3 lety
This is the third in a series of videos covering the repair and restoration of a WW2-era SCR-284 radio set. In this video, I restore the GN-45 generator, a hand-crank generator which converts human power into a supply for the transmitter section of the radio. This process includes cleaning, fabrication of reproduction components, circuit checks, capacitor replacement and restuffing, and testing...
WW2 Army Radio Receiver Restoration - SCR-284 Part 2
zhlédnutí 39KPřed 4 lety
This is the second in a series of videos covering the repair and restoration of a WW2-era SCR-284 radio set. In this video, I complete the receiver section of the Crosley BC-654 restoration, and demonstrate the receiver in operation on an amateur radio band. This process includes cleaning, fabrication of a WW2 reproduction battery pack, circuit checks, capacitor replacement and restuffing, spea...
Crosley BC-654 Radio Introduction - SCR-284 Part 1
zhlédnutí 18KPřed 4 lety
This is the first in a series of videos covering the repair and restoration of a WWII-era SCR-284 radio set. In this video, I review the basic features of the main component of the set, a Crosley BC-654 transmitter and receiver. I also complete the initial teardown, and a few minor repairs. Subscribe to keep up to date on historical military restoration projects, with a focus on the Second Worl...

Komentáře

  • @zackarymcclain164
    @zackarymcclain164 Před 24 dny

    bro this restoration was so complete and accurate that you have to be autistic or have a degree in history or something. you dont seem like a history major though so im going to assume its the tism.

  • @-r-495
    @-r-495 Před 25 dny

    being weary of PCBs is sensible. they were everywhere in old equipment 🥵

  • @klingonbaronessprincesskar5519

    I do the same restoration of radios and artillery plus other things 😂😂😂

  • @scamsuncensored7740
    @scamsuncensored7740 Před 27 dny

    Wow! what a high quality restoration and the receiver worked beautifully.

  • @henrikstenlund5385
    @henrikstenlund5385 Před měsícem

    Thanks for sharing this. In 1968 I found the manual of this radio in the store of a radio shop. These units were not available in my country at all. Therefore I am still wondering how this secured document could be available. At that time I built tube radios and repaired all kinds of radios and tv's. Henrik OH2BLO

  • @TorchOnTarget
    @TorchOnTarget Před 2 měsíci

    Hey, loved the video. Am working on a similar project. Was wondering where you got your number stamps? Thanks in advanced!

  • @Pabloeskobar6680
    @Pabloeskobar6680 Před 3 měsíci

    Hello any more video ?:)

  • @juanmanuelgallego3630
    @juanmanuelgallego3630 Před 3 měsíci

    Congratulations, that was amazing!

  • @GarmrNL
    @GarmrNL Před 3 měsíci

    I just found your channel when looking up information on the GN-58 B that I have inherited. I love the way you present your information :-) Subscribed to your channel!

  • @maxasaurus3008
    @maxasaurus3008 Před 3 měsíci

    Kick ass work my man!

  • @romangsh
    @romangsh Před 3 měsíci

    great job

  • @alastairbarkley6572
    @alastairbarkley6572 Před 5 měsíci

    SCR-284 was the nearest US forces came to a 'bad radio'. Designed for development engineers in a lab, not frontline troops, it was heavy, heavy ("like carrying an air-conditioner on your back", according to some), the casing unable to keep out moisture and humidity, fussy and fiddly to keep going (the tuning dial mechanism needed a special jewellers type lubricant, for example) and hell to hand crank for any length of time (it also came with a vibrator supply and a dynamotor supply for vehicle or fixed station use). So poorly did SCR-284 perform in the really harsh conditions/terrain of Italy 1943 that the Signal Corps was forced to un-mothball the pretty dreadful SCR-511 'pogo-stick' cavalry radios to substitute. Photos show the US 101st Airborne using the SCR-694 (a vast improvement) at MARKET-GARDEN (Sept 1944) - the French Army Signals Directorate documentation on SCR-284 is dated April 1947 so I guess the US Army Signal Corps arranged to dump these radios (plus other less than stellar performers like the hugely over-rated SCR-536 Handy-Talkie) on the French and other unfortunates like the Thai military, post-war, as soon as possible. Beggars can't be choosers after all.

  • @juanbizama5438
    @juanbizama5438 Před 5 měsíci

    Buenas tengo un generator gn-58-a-gy esta funcionando original

  • @valveman12
    @valveman12 Před 6 měsíci

    You did a great job restoring this generator...I can't imagine a soldier able to run that for long, especially providing enough voltage and current to drive Tubes, which are extremely lossy.

    • @alastairbarkley6572
      @alastairbarkley6572 Před 5 měsíci

      This was the main reason that the hand crank operation of this set wasn't popular. It was very tiring for the average GI. When using hand crank, the transmitter should only be operated at HIGH power 'for short periods of time'. I bet for those GIs, 'short' wasn't short enough (and for the radio op, LOW power wasn't high enough).

  • @MIKROWAVE1
    @MIKROWAVE1 Před 6 měsíci

    I had one of these beat me. I got the Rx and TX to work separately powered with my hombrew power supply. But together - Boom. Smoked PSU. I passed the unit on.

  • @ramjet4025
    @ramjet4025 Před 6 měsíci

    Very nice reproduction battery. Very nice art work.

  • @towerman75
    @towerman75 Před 7 měsíci

    Definitely an artist. I use to rebuild old equipment, but never took the extremes like you have shown here. You should be very proud.

  • @scottwood1143
    @scottwood1143 Před 8 měsíci

    Truly beautiful work on a fantastic specimen 😊 My dad operated one of these in the war.

  • @Ubermeisteryyy
    @Ubermeisteryyy Před 8 měsíci

    Incredible work! And a well done video! Subscribed

  • @rjy8960
    @rjy8960 Před 8 měsíci

    The battery pack work was superb :) New subscriber.

  • @fretlessfender
    @fretlessfender Před 9 měsíci

    I'm not going to lie... but you are up there with the best in CZcams land! Nice narration, pleasant voice, good quality footage, unbelievable wireless! It is a pity your channel has dried up, for you are able to create huge interesting content! Anyways, subscribed, liked the bell... the whole shebang!

  • @lomgshorts3
    @lomgshorts3 Před 10 měsíci

    I also approve of the speaker repair! Very Ham Radio approved. The battery box I would have built would have used 18650 lipo batteries and parallel sized D cells, and I would have built a more permanent AC supply for stationary use. This is just my take on making the radio “user friendly“, not what you should have done (your take was fine!). Lucky to have found a matching speaker, too. I have a BC-348 Q in my shack, un modded with the dynamo, and it may be a bit noisy, but it does fine on the 24volt battery I got used from the local airfield. So it doesn't receive the high HF frequencies, but it works with my 40 and 80 meters QRP CW transmitters. Lots of fun! Good Luck and 73 de W4FJF.

  • @Etherionix
    @Etherionix Před 11 měsíci

    Recap all of them!!!

  • @scottpearson9846
    @scottpearson9846 Před rokem

    thats not a pick, its a scaler with a tip. its a dentists tool

  • @gwebocelestron9194
    @gwebocelestron9194 Před rokem

    I recently bought at a flea market a WWII G-3 hand crank generator that went with the TRC-7 radio. Working on restoring it. The generator works just great. It just needed a little TLC - bending back into shape the brace which attached the seat to the tripod and some touch up paint. It was also missing one of the handles, so I'm making new handles. Also had no cable, so I have to create a 3 prong DIN like connector and cable. If anyone has such parts (handle and/or cable) I would be interested.

  • @gwebocelestron9194
    @gwebocelestron9194 Před rokem

    I just picked up from a flea market a 1945 G-3B hand crank generator used with the TRC-7 radio. Excellent condition with the tripod seat/stand. Internal components look great and it works!!! Mine actually came with a cloth bag of never used brushes inside. Excellent flea market find!! I too am wondering how much I should restore it. Needs some cleaning, a tiny bit of rust removal, but I might consider repainting if I can find the right vintage OD green. Wish I could share a pic here. Yours is the only video I can find about these old generators. Maybe I should make a video.

  • @k1mgy
    @k1mgy Před rokem

    What a labor of love. Fascinated with your font reproduction work! Are these available public domain (as .ttf files)? I have a number of "boat anchors" that I will never be able to restore and must part with. CV-920A (x2), an AM-2477B/URR, a R390A, and numerous mil-surplus RF test gear. Perhaps you or someone out there may have an interest?

  • @francisbackstreet
    @francisbackstreet Před rokem

    Amazing :)

  • @christianguerrero19

    great my frien, greetings from Callao Peru

  • @christianguerrero19

    Great my friend, greetings from Callao Perú, no sabía de esto

  • @jasoncreed6396
    @jasoncreed6396 Před rokem

    Is it for sale?

  • @gfpaulosky
    @gfpaulosky Před rokem

    Brillian!

  • @LeLyfa
    @LeLyfa Před rokem

    Thank you for this video! I really enjoyed watching it. 73!

  • @andrzejpl9897
    @andrzejpl9897 Před rokem

    👍👍👍

  • @Allan_aka_RocKITEman

    @WartimeWorkshop >>> 👍👍

  • @Allan_aka_RocKITEman

    @WartimeWorkshop >>> 👍👍

  • @zawzawaung6789
    @zawzawaung6789 Před rokem

    The last hand-cranked generator in the US Army was the 1980s PRC-70, which came with a G-76 generator to charge the awful NiCad batteries. The thing was quite loud. And it was also tough to keep turning at the right speed to provide juice. It had a red/green light to show when enough power was bring produced. I hated this radio. It was made by Cincinnati Electronics, and was intended to replace the PRC-74 and PRC 77 for special operations units.

    • @zawzawaung6789
      @zawzawaung6789 Před 2 měsíci

      The whole PRC-70 thing was a debacle. They wanted a heavy radio to do too much, and with the worst rechargeable battery system we'd ever seen.

  • @SiloSoundStudios
    @SiloSoundStudios Před rokem

    Just fantastic. Really enjoyed this restoration!

  • @davesusek3330
    @davesusek3330 Před rokem

    So cool you created a museum piece

  • @OleJoe
    @OleJoe Před rokem

    That is so cool!

  • @Radiogenes
    @Radiogenes Před rokem

    Suscribed

  • @Radiogenes
    @Radiogenes Před rokem

    Very nice videos! Suscribed!!

  • @Raja-kr8ul
    @Raja-kr8ul Před rokem

    Excellent video sir. Thanks for repairing the old to usable. Brought new ideas of past into present. New to the world would understand the elders. Please produce new generators for the present use. Bring to market and solve energy crisis.

  • @moviestudioland
    @moviestudioland Před rokem

    Absolutely incredible video and your workmanship is beyond compare. Loved this video. I think you could surpass or complement many museum curators in recreating the artifact in the present day. Thank you.

  • @juanchemencedji1911

    wonderfull... cx3et-uruguay...

  • @juanchemencedji1911

    sencillamente exelente,amigo,soy amante de los trastos de guerra...algo tenemos en el shack...cx3et...

  • @GunsandGearNetwork
    @GunsandGearNetwork Před rokem

    Awesome!!! A video on painting a RT524 radio would be great. I have one in OD and wanting to do it in CARC. My concern is getting all the white lettering on the face plate correct. Keep up the great work!! 👍

  • @GunsandGearNetwork
    @GunsandGearNetwork Před rokem

    AMAZING JOB, on this restoration!! Earned yourself a new sub!!

  • @johnnaglic
    @johnnaglic Před rokem

    Great work in restoration of the product. You know your stuff well. It's always interesting to seeing other people's inventions and designs back in the day. I made my own generator as well mainly as an experiment to have answers on torque, etc. Hand powered devices have limits, one being the human element.

  • @zbyszekpodchmielony2642

    👏👏👏👏👏+ 👍 Super ! Best 73 & Gl !