Presses and the such.
#1
Posted 17 July 2004 - 04:04 AM
Just wondering if this press is fine for pyro use. Only thing is a blast shield. I think the shields sold at hobbfireworks are not wide enough so any idea on a good type of shield available? Tryed a search but no results.
Lastly any idea on how to install a guage because I believe consistent pressures are good.
#2
Posted 17 July 2004 - 07:47 AM
It is very similar to mine, except mine is a true H-frame rather than coming to a point at the top.
You can buy a gauge with a cylinder, like the ones Wolter Pyro Tools and Harold sell, which requires no modification to the jack. Otherwise you need to dismantle the jack, drill and tap a hole in the correct place, then install a gauge that reads the oil pressure. You then need to work out the calibration based on the size of the cylinder, etc.
There was a website that described the process of adding a gauge to the press, but I can't find it right now?
http://www.vk2zay.net/
#3
Posted 17 July 2004 - 03:14 PM
thegreenman
#4
Posted 25 July 2004 - 09:43 PM
Ive heard Lexan is good, thanks Warren, but I am looking for the strongest stuff available. I dont intend on having any mistakes but more so a just incase measure. What do all of you guys use?
#5
Posted 26 July 2004 - 08:18 AM
If you can get lexan it will do the job. It is the same stuff they use for helicopter windows and can withstand very high impacts. If you can only get hold of the thinner pannels then use a few layers with a bit of space between each.
Mark
BPA L1 & L2
#6
Posted 29 July 2004 - 02:45 AM
If anyone needs a prebuilt press I would highly recomend Harborfreight if you dont mind the higher fees if ordering out of USA.
Think 3/8" should be fine for whistles up to 5/8" and BP rockets up to 4lbs?
Lastly if anyone would like to know where to get some lexan up to 1/2" thick and 4'x8' let me know. (It is a US source though, just incase you cant get any where you are)
#7
Posted 29 July 2004 - 04:13 AM
hopefulley that will help
Dan
#8
Posted 16 August 2004 - 08:53 PM
?63 for a 6 tonne press, unfortunatly its like a bloody macano set with bad assembly instructions!
Also, some of the presision engineered bolt holes are not so precise and required a drilling out or a bit of work witha round file...
Fraser
"If your Aunty had balls.... She'd be your Uncle!"
#9
Posted 21 August 2004 - 03:09 PM
I basically went with the passfire design. Out of the wooden designs I found, that appeared to be the strongest. A couple $$ in bolts, screws and three 2x10's is all it took. For about $35 I had my press, not including jack.
Edited by Patrick, 21 August 2004 - 03:10 PM.
#10
Posted 23 October 2004 - 09:31 PM
You can buy a gauge with a cylinder, like the ones Wolter Pyro Tools and Harold sell, which requires no modification to the jack. Otherwise you need to dismantle the jack, drill and tap a hole in the correct place, then install a gauge that reads the oil pressure. You then need to work out the calibration based on the size of the cylinder, etc.
Does anybody have more info on where you can buy these types of gauges? Sure would be easier than modifying the bottle jack. The Wolter one looks great, and the price isn't too outrageous either. How much is the one from Harold? (Is he a member here or something?)
More info on this subject would be great if anyone has any, including how to add a gauge to a bottle jack as alany mentioned.
#11
#12
Posted 01 December 2004 - 07:40 AM
Another question that just popped into my head... Does anyone know if the framing of a 6 tonne press is the same as the 12 tonne. In other words, is it the same press, just with a higher rated hydraulic jack in it. The reason I am asking is that I have a 12 tonne truck jack somewhere around here.
But anyway, if I do manage to somehow get them to get in a 12 tonne press, then all is good. If not, and the 6 tonne is going to suit my needs, then I will settle on that. If they cant get a 12 tonne in, and a 6 tonne is not really suitable, then I guess I will just have to dig out the truck jack and make my own
#13
Posted 01 December 2004 - 11:09 AM
I'm not sure how far you can go with 6 tonnes... Should depend on what you want to press. Dry-pressing large comets takes alot of pressure, but for relatively small work, I think 6 tonnes should be sufficient.
#14
Posted 01 December 2004 - 12:13 PM
http://www.machinema...30&r=2054&g=107
#15
Posted 01 December 2004 - 12:52 PM
Looks like I've got some saving up to do....
Unless I can find one in a skip, of course
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