ok not a very clear bleu print. it basicly two rectangular steal bloks with two heavy bolts at the sides. in the midle you file the profile of a screw(the vvvv). when you take a strip of silver r whatever soft metal you are using you can draw it in between the bloks(fixed in a vice). every pass you tighten the bolts a bit more.
in the end youve got a strip of silver with the groover you want. you can bassicly use this principle to make thread into whatever shape you want
now you can roll this around a mandrel(mandrel is jus a round rod at the diameter you want wright?)
and saw it off. now bend your tube to be slightly so that the groves don't line up straight but in the spiral of a screw. solder it. hammer it around a mandrel with a rubber hammer and carfuly work your seam with files without damaging the grooves.
now just repeat the same proces with the lid only whit theg grooves on the inside(be careful not to damage the grooves with the mandrel.
now this princyple doesn't work for very well on small diameter tubes but the i think i could do it on your example pic(thoug the size doesn't show)
what was youre diameter again?
ther are some details about the drawing iron that I find kind a hard to explain. if youre realy interested in this idea I could post a pic. I hope you catched my drift and understand what I ment.
goodnight, ambition
Reply
Random image
Poll
who is chatting
Who's online
There are currently 0 users and 127 guests online.
diverent aproche
here's an idiea(hope i can expain it clear anough in english)
someone at my school made round box with a screw top lid once.
he mad a drawing iron(again dont no if its the right word. what you use to draw thread)shaped like this
[| |] [| |]
---------------------
--------vvvv---------
| | | |
------[]----[]-------
---------------------
[| |] [| |]
ok not a very clear bleu print. it basicly two rectangular steal bloks with two heavy bolts at the sides. in the midle you file the profile of a screw(the vvvv). when you take a strip of silver r whatever soft metal you are using you can draw it in between the bloks(fixed in a vice). every pass you tighten the bolts a bit more.
in the end youve got a strip of silver with the groover you want. you can bassicly use this principle to make thread into whatever shape you want
now you can roll this around a mandrel(mandrel is jus a round rod at the diameter you want wright?)
and saw it off. now bend your tube to be slightly so that the groves don't line up straight but in the spiral of a screw. solder it. hammer it around a mandrel with a rubber hammer and carfuly work your seam with files without damaging the grooves.
now just repeat the same proces with the lid only whit theg grooves on the inside(be careful not to damage the grooves with the mandrel.
now this princyple doesn't work for very well on small diameter tubes but the i think i could do it on your example pic(thoug the size doesn't show)
what was youre diameter again?
ther are some details about the drawing iron that I find kind a hard to explain. if youre realy interested in this idea I could post a pic. I hope you catched my drift and understand what I ment.
goodnight, ambition