Post by cg43 on Apr 4, 2024 8:40:38 GMT -8
Hello
I never succed in macking a fine surface machining teflon or other soft plastic's .
But there is a way if you can use a teflon plate that allready has one fine surface .
First I'm looking for a surface with no scratsches and mark it .
Then I'm milling this part of the plate from the backside to the needed length of the poppet .
Next you need a zirkular saw with the inner diameter of the outer diameter from the poppet .
Every steel is good enough for plastic .
I simple buy a drill in a hartware shop that has drill's in fine gradations .
The outer diameter is not critical . I prefere to make this diameter 1 - 2mm greater to come to a
wall thickness from 0,5 - 1mm . With a file it is easy to make the teeth .
Now drill your teflon from the good surface side and you have a perfect poppet .
If your nozzle is good you will have only a low pressure drop of the IP compared to a poppet
with rought surface .
If you need a center hole you obviously have to drill it first .
With the teflon clamped on the tabel of the mill or drill it's no problem to make
the second diameter centrical to the first .
Greetings Rainer
I never succed in macking a fine surface machining teflon or other soft plastic's .
But there is a way if you can use a teflon plate that allready has one fine surface .
First I'm looking for a surface with no scratsches and mark it .
Then I'm milling this part of the plate from the backside to the needed length of the poppet .
Next you need a zirkular saw with the inner diameter of the outer diameter from the poppet .
Every steel is good enough for plastic .
I simple buy a drill in a hartware shop that has drill's in fine gradations .
The outer diameter is not critical . I prefere to make this diameter 1 - 2mm greater to come to a
wall thickness from 0,5 - 1mm . With a file it is easy to make the teeth .
Now drill your teflon from the good surface side and you have a perfect poppet .
If your nozzle is good you will have only a low pressure drop of the IP compared to a poppet
with rought surface .
If you need a center hole you obviously have to drill it first .
With the teflon clamped on the tabel of the mill or drill it's no problem to make
the second diameter centrical to the first .
Greetings Rainer
