[Arthur Brown]

Firing box you have PM

[Arthur Brown]

At risk of hogging the thread, I've just seen a list with igniters starting at 25p each. OK add VAT and carriage and buy thousands.

[icarus]

why not be a real penny pincher like me 80 grammes of bridgeless igniter compound will enable you to make a hundreds of igniters i can make a batch of 100 igniters in about 2.5 hrs work cost is wire plus about 70p per hundred for chemicals stripped ribbon cable is good or bell wire

[mlepyro]

Hello,

I've been to the leading Chinese igniter factory and the leading Czech igniter factory personally. Czech igniters are not made in China, copies might be however.

My advice...
If you're looking for ultra reliability (ISO9001 etc), buy Czech.
If you're not bothered and want them to a price, buy from China.
If you need them locally, I guess you take what you can get, otherwise mail order?

Mat

[digger]

mlepyro, on 13 February 2011 - 05:13 PM, said:

Hello,

I've been to the leading Chinese igniter factory and the leading Czech igniter factory personally. Czech igniters are not made in China, copies might be however.

My advice...
If you're looking for ultra reliability (ISO9001 etc), buy Czech.
If you're not bothered and want them to a price, buy from China.
If you need them locally, I guess you take what you can get, otherwise mail order?

Mat

No offence meant Mat

These Czech ematches are made in China Clicky Clicky

[dave]

digger, on 13 February 2011 - 07:52 PM, said:

No offence meant Mat

These Czech ematches are made in China Clicky Clicky

for those dipping their own, the above link prvided by gareth, provides the following details:-


Electric match Performance Parameters
The resistance of bridge filament at 21: 1.3±0.1Ω℃ 1.7±0.15Ω

Connection in parallel or single rated ignition current: 0.50A 20ms

Connection in series rated ignition current: 0.80A 5.0ms

Firing point current: 0.40A

The firing time while the current is 1A: 2ms

Safety current: 0.25A 5s

Test current: 0.50mA

The size of protective cover of Powder head: Φ5.8mm

Length: 16.7mm

Shake: 2h

High temperature: 80 4h℃

Low temperature: -60 4h ℃

Electric match Composition No

Ingredient

Proportion

Formula

1

Potassium perchlorate

47.4%

KClO4

2

Calcium Silicide

23.6%

CaSi

3

Antimonous sulfide

23.6%

Sb2S3

4

Collodion(Solution)

5.4%

[C6H7O2(ONO2)8]n

Fuse head priming weight: 0.025g/pcs approximately

Damp-proof paint: Nitrolacquer