Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: My new blasting machine 2
Petn1933
Hazard to Others
***




Posts: 106
Registered: 16-9-2019
Member Is Offline


[*] posted on 7-1-2022 at 16:13
My new blasting machine 2


this is my new electric blasting machine!
Medium power.
Firing Voltage: 270 VDC Maximum
Firing Energy: 4.2 Joule (w/s)
Power Source: 6v,4AA battery
Charge time:about 5s.
Compact and useful device.

D39B5003-FE83-4BD1-8647-9C10BE906B94.jpeg - 328kB35DD818D-9396-455B-9A46-669AE29EC638.jpeg - 346kB
View user's profile View All Posts By User
Rainwater
National Hazard
****




Posts: 834
Registered: 22-12-2021
Member Is Offline

Mood: indisposition to activity

[*] posted on 7-1-2022 at 16:37


I love the size. Mines as big as a shoe box and has 6 heavy d cells in side. Use it for cadweld charges and the occasional trench blast. Got a little use a few days ago with the new years.



"You can't do that" - challenge accepted
View user's profile View All Posts By User
specialactivitieSK
Hazard to Self
**




Posts: 94
Registered: 21-10-2014
Member Is Offline

Mood: No Mood

[*] posted on 3-2-2022 at 08:50


New toy VOPIL M524

2022-02-03-17-47-24-862.jpg - 1.3MB2022-02-03-17-48-42-216.jpg - 1.4MB
View user's profile View All Posts By User
specialactivitieSK
Hazard to Self
**




Posts: 94
Registered: 21-10-2014
Member Is Offline

Mood: No Mood

[*] posted on 6-2-2022 at 09:46


Upgrade

2022-02-06-18-44-17-963.jpg - 2.3MB2022-02-06-18-42-38-132.jpg - 2.5MB
View user's profile View All Posts By User
Mateo_swe
National Hazard
****




Posts: 518
Registered: 24-8-2019
Location: Within EU
Member Is Offline


[*] posted on 4-10-2022 at 10:33


I guess the guts of these contain some very low resistance, high energy caps and a charging circuit.
And some bleed resistors to remove the energy if left alone for a while, disarming the device.
Are there any DIY variants of this sort of device one can build?
I have some electronic skills but would prefer to start with a proven design compared to develop something from scratch.
View user's profile View All Posts By User
Petn1933
Hazard to Others
***




Posts: 106
Registered: 16-9-2019
Member Is Offline


[*] posted on 12-10-2022 at 06:00


Quote: Originally posted by Mateo_swe  
I guess the guts of these contain some very low resistance, high energy caps and a charging circuit.
And some bleed resistors to remove the energy if left alone for a while, disarming the device.
Are there any DIY variants of this sort of device one can build?
I have some electronic skills but would prefer to start with a proven design compared to develop something from scratch.

in my opinion ; You can use the flash charging circuit of disposable cameras as a basic idea.
In Google, the schematics of those circuits are available.
As someone who has worked with standard military examples of these devices; The basic idea of all of them is like the charging circuit of disposable cameras.
Good luck
View user's profile View All Posts By User
Mateo_swe
National Hazard
****




Posts: 518
Registered: 24-8-2019
Location: Within EU
Member Is Offline


[*] posted on 14-10-2022 at 05:15


That is probably a good idea to try.
Those flash caps in one-time cameras are pretty powerful, i have played around with them long ago.
If not enough power several caps can be used.
I guess it depends on how long cable one wants to use to the e-match or similar.
Some remote wireless triggering signal would be nice, then just a short cable from the explosive to the DIY device would be needed.
Also, in the the one-time cameras there is a trigger coil that can be used to trigger the discharge of the caps.
The main thing must be to make it absolutely safe, so it doesnt accidently trigger somehow.
Maybe a mecanical pin that needs to be removed by a thin rope, but it kind of ruins the wireless triggering.
A long cable is probably better and safer.

[Edited on 2022-10-14 by Mateo_swe]
View user's profile View All Posts By User
Sir_Gawain
Hazard to Others
***




Posts: 302
Registered: 12-10-2022
Location: Due South of Due West
Member Is Offline

Mood: Way less sad

[*] posted on 15-10-2022 at 16:22


I have not had much luck with photoflash capacitors, but a microwave oven capacitor charged to 4kv will detonate ETN every time.
View user's profile Visit user's homepage View All Posts By User

  Go To Top