Tubes
#1
Posted 19 February 2004 - 04:43 PM
I have found a company which can supply pyrotechnic tubes with an ID of 56mm upwards and decent wall thicknesses, but it isn't economically viable to buy small amounts, as the fee for setting up the machine makes up most of the costs.
Example: 56mm ID, 500mm long, 8mm wall x10 ?43
x20 ?45
Does anyone know of any sources for small tubes which don't need strengthening, or a company which holds small tubes in stock?
#2
Posted 19 February 2004 - 05:08 PM
Then if you go to enquires, you can select what types of tube you need.
Edited by a2wpyro, 19 February 2004 - 05:09 PM.
#3
Posted 19 February 2004 - 05:16 PM
#4
Posted 19 February 2004 - 06:47 PM
Mark
BPA L1 & L2
#5
Posted 17 March 2004 - 02:04 AM
..
The tubes im looking for are parallel wound tube 3/4" to 1" ID by 30" long wall thickness 1/4... For 1 pound rocket and stinger,fountain... etc..Has anyone on the forum got any good quality tubes from the uk?
Djinn you say if dealing with essex tube? dont go over 4 or 5mm The tubes im looking for are 6mm..are there any other good suppliers in the uk?(crayford tubing?)..
I just watched a video (AFN Paper paste & String by John "doc" Vico) I was hoping it would show hand made paper tube but it didnt ..It was more about finding the right materials for the job...I know people hand roll paper tubing for salutes.. but what about making larger thick walled tubes for big rockets..etc..
Ps The 90$ P&P was for 30" tube if i got smaller length 7 1/2" it dropped to $40+
im posting this at about 2am in the morning because i have had to wait for my Gf to go to bed before i could watch as she put it "Boring Video paper paste & string" ....
#6
Posted 17 March 2004 - 05:54 PM
You say that you're looking for tubes with a wallthickness of 6 mm.
I think that 1 mm will not make much of a difference.
#7
Posted 17 March 2004 - 09:50 PM
#8
Posted 18 March 2004 - 07:59 AM
Wall thickness isn't everything, the quality of the tube material, the adhesive and the winding density makes an enormous difference. It is very hard to achieve the strength of commercial tubes by hand-rolling, at least for the same wall thickness.
I often roll small to medium mortars from chipboard (the bulk of the thickness) and kraft or typing paper (for the surface). The over-wrap of thin paper is to give a good surface and hold the chipboard in place while the tube dries. Some people start rolling with paper too, which limits the size of the discontunity inside the tube, which can be quite important for candles and rockets. I've heard of people tearing and feathering the starting edge to help with this, seems like it would just make it harder to start the rolling.
I use a rolling board when I really want a solid tube with good walls, inside and out.
http://www.vk2zay.net/
#9
Posted 20 March 2004 - 02:16 AM
#10
Posted 20 March 2004 - 11:52 AM
If you are going to make stingers stick to 1 lb ones 3/4"id for some reason are more easy to make. Tooling can be made in 10mins for one at hardly any cost at all. However the tubes are a different matter. I have made some but for a decent one took me about half an hour each A quicker way is to do it the Mrpyromx way if you can find any 3" wide gummed Kraft packing tape.
With rockets starting smaller and working up is a good idea. I know you've seen my 12mm id x80mm fly. They're not bad even if I do say so myself.
Maxman
#11
Posted 20 March 2004 - 12:49 PM
#12
Posted 20 March 2004 - 02:08 PM
Edited by sasman, 21 March 2004 - 03:14 PM.
#13
Posted 21 March 2004 - 02:13 AM
You *can* make thin-walled stingers if you are careful:
http://www.vk2zay.ne...vice.php?id=110
http://www.vk2zay.net/
#14
Posted 12 March 2005 - 12:36 PM
I find that thermal fax paper tubes are a good tube especially for salutes ,
not tried rockets with them yet ,but do have one that i need to attach a correct length stick too then its ready, So wish me luck.
tubes Have an internal diamater of approx 11mm and about 3mm for wall thickness and are quite solid.
hope this helps.
Edited by Mike R, 12 March 2005 - 12:38 PM.
#15
Posted 21 March 2005 - 05:34 PM
Among many others, I got a 4m long 4 1/4" ID tube with 8mm walls, which could come in handy
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