SKC Posted August 4, 2019 Posted August 4, 2019 In a thread few days back a senior member of ours had said "BP in several grades can produce fast slow & delayed fuse. I've made my fuse with 6 ply cotton string. My KNO3 is soft & milky white & I worm it a bit to get rid of moisture within. My AF C is from Indian species of Ziziphus tree which is shrub kind of plant. Sulphur as usual. In 75/15/10/5(dex) I screen them 5-6 times grind them with mortar & pestle and again screen 2-3 times. Then wet with water. This way I'm getting fuse equivalent to visco. Now I intend to prepare fast As well as delayed fuse too. Seniors please help me on this. I do have Acetone, doctors spirit & methylated spirit in my stock also. Mentioning if those are handy on this project. I understand seniors here don't care about 'Thanks in advance', they just do help.
pyrokid Posted August 5, 2019 Posted August 5, 2019 If I interpret this question correctly, you have succeeded in producing a slow fuse by coating a cotton string in BP slurry, and you now want to create a fast fuse with a similar processing method. The solution is to encase your existing fuse in a thin (~2 layer) paper tube. This flexible "quickmatch" burns very quickly. "fast" visco fuses are typically made by wrapping granulated composition in spiral threads, taking advantage of the air pockets and surface area of the granules to increase the burn speed.
SKC Posted August 7, 2019 Author Posted August 7, 2019 Thank you Pyrokid & Happy Birthday to you as today is 07/08 here. Yes I know the funda of 'quickmatch'. My intention was to know the process(if there is any) of making a fuse faster than a fuse made by dipping in 75/15/10/5(dex). Sometimes back I saw a video of three fuses(not in 'quickmatch' form) burn rate comparison. First one was a delayed fuse. Second one was a normal black match & the third one burnt mutch faster.Thank you.
pyrohacker Posted November 5, 2019 Posted November 5, 2019 Greetings I don't have access to quickmatch. Does anyone knows what's the exact width of a Chinese made quickmatch fuse?
FlipperFuego Posted November 27, 2019 Posted November 27, 2019 why dont you just buy onehttp://freeimagehost.info/i/EiPdYKRhjL.png
Arthur Posted November 27, 2019 Posted November 27, 2019 Creaky says! The original reference was to Quickmatch, Blackmatch and Spollettes. All made with good fast BP and each yielding a different timing behaviour. If you make other compounds then more speeds of burn are available, but I'm no expert there. It takes making a machine to spin a cotton jacket round a steady stream of quality BP and call it Visco or if you add more covering it starts to be time fuse. Bickford was an early maker of this fuse and he used layers of cotton, paper and bitumen or tar to make the fuse more water resistant than the preceeding ones.
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