Big Discount Precision Casting Wax for Jakarta Manufacturers
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Big Discount Precision Casting Wax for Jakarta Manufacturers Detail:
Precision Casting Wax mainly is used for precision mechanical process with zero allowance or very limited allowance. We can not adopt general casting technique, but can only adopt zero allowance casting or precision casting. Because of the product’s structure is very delicate and complex especially in bejeweled with golden and silver, such as diamond ring, brooch, earring etc.
The characteristics of precision casting wax are: good coating property, no denaturalization to be heated, good flow ability, good thermal stability, and well surface finish.
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I’ve had several requests for an electric door lock or remote operated door lock so I decided to make a simple one using a cheap sliding bolt and an RC set-up using one servo.
You could just use the servo with a battery and a switch or button if you modify the servo by removing the circuit board inside. There are plenty of videos on YouTube showing how to do this.
Main components
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Sliding bolt
RC transmitter and receiver
Servo
Main Tools
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Probably a drill and screwdriver to mount the bolt on the door
I only used double sided tape for this demonstration.
In response to several requests I am giving the eBay listings used for my R/C equipment, but please understand I am not recommending these items to you for any special purpose. These are just the ones that I used. I would recommend you did your own search on eBay or Amazon or anywhere you like and make your own choice. In fact I would recommend you bought a simple 1 or 2 channel remote control relay unit designed for this sort of job which is much cheaper although you would need to modify the servo to make it work with DC voltage. Using a proper r/c transmitter is a waste of money for a door lock unless you intend to use it for planes or cars afterwards.
The radio control transmitter and receiver listing https://www.ebay.co.uk/itm/190888163364
Last time I bought servos I got 10 on this listing https://www.ebay.co.uk/itm/261521757538
and recently I bought a 12V Single Channel Fixed Encoding Wireless Remote Control Switch on this listing https://www.ebay.co.uk/itm/400628157682
The battery pack is 4 AAA batteries in a holder that came from a small torch that I modified by adding a suitable plug to match the receiver.
If you don’t want to use an r/c servo then you could buy a ‘door lock solenoid’ actually designed for the job, here is an example https://www.ebay.co.uk/itm/190856003511
On the subject of modifying servos here is a very comprehensive video by Forrest Trenaman which is worth watching even though it leaves the servo controlled by a radio receiver so it is unsuitable for this case https://youtu.be/6G1nHfvl4aI
You could follow the general flow of this video but the simple change is that you remove the circuit board entirely and connect your DC power supply directly to the motor via your switch so the servo drives your door bolt in and out continuously and you have to judge when it is locked or unlocked.
Filmed using FujiFilm FinePix S4800
Edited using Serif MoviePlus Starter Edition
Related playlists
Remote Control Door Lock playlist https://www.youtube.com/playlist?list=PLA5a2xPRSrB1HM3Smxg8X-IG7dSuJyzkK
Electronic Projects playlist https://www.youtube.com/playlist?list=PLA5a2xPRSrB00lxaX8BD46F1QDJTe7Em4
Radio Control playlist https://www.youtube.com/playlist?list=PLA5a2xPRSrB13Xcquw4Ff09MQzTPjeVkI
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This is a video explaining and demonstrating the construction of a homemade piezoelectric transducer. Using Barium Titanate as the piezoelectric substance, the material is sandwiched between two conductive plates and tested to measure the performance of the cell.
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