Flanges are designed with only two diameter measurements, so it is very easy for the laser operator to adjust the dimensions at the time of cutting to fit the pipe. Next time ask the operator to adjust the clearance as soon as he cuts the first piece.
Yeah, I'm sorry you had a crummy experience but this one's on you. The guys who cut it can't read your mind. You just took the outer diameter of the pipe and made that your drawing dimension. Of course you need to add clearance to your drawing. The laser can't cut your intentions, it cuts what you say to cut.
Obviously this is your first experience with laser cut parts. I've worked with them for 10 years and I believe the kurff marks caused your issues. The edge is very hard but a simple clean up using a flapper wheel in a die grinder would have worked. If that is a little too slow for you a quick buzz round with a carbide burr would have done the job also. This method would have been far quicker than setting up the mill burning up hole saws cutting a tiny amount out on a very hard edge. You live and learn but don't go round saying laser parts aren't any good because it's simply not true they work fine in many applications world wide. I would suggest they are too fancy for the purpose your using it for I'd think a punch die cut part would be ideal if you had the correct tooling to process the raw sheet material into these discs i.e a big iron worker.
sorry for your bad experience. I do laser and i do CAD and i weld. You get down to 0.05mm precision in laser. which is 1/500 inch ;) o ok like o.oo2 i d measure the pipe acurately first and size the CAD then or rather program the machine directly . whoever needs CAD for a circle has serious issues !
you should include clearance on your cnc files or cad drawings.
Flanges are designed with only two diameter measurements, so it is very easy for the laser operator to adjust the dimensions at the time of cutting to fit the pipe. Next time ask the operator to adjust the clearance as soon as he cuts the first piece.
Yeah, I'm sorry you had a crummy experience but this one's on you. The guys who cut it can't read your mind. You just took the outer diameter of the pipe and made that your drawing dimension. Of course you need to add clearance to your drawing. The laser can't cut your intentions, it cuts what you say to cut.
It’s a learning process.
Your designer fucked up.
I was told laser cuts a 0.2 mm tapered “kern” shape. This means the dims are wider on one side.
pipe diameter * 1.01 then add 1mm should be the design internal diameter to account for both tolerance errors
Obviously this is your first experience with laser cut parts. I've worked with them for 10 years and I believe the kurff marks caused your issues. The edge is very hard but a simple clean up using a flapper wheel in a die grinder would have worked. If that is a little too slow for you a quick buzz round with a carbide burr would have done the job also. This method would have been far quicker than setting up the mill burning up hole saws cutting a tiny amount out on a very hard edge. You live and learn but don't go round saying laser parts aren't any good because it's simply not true they work fine in many applications world wide. I would suggest they are too fancy for the purpose your using it for I'd think a punch die cut part would be ideal if you had the correct tooling to process the raw sheet material into these discs i.e a big iron worker.
sorry for your bad experience.
I do laser and i do CAD and i weld.
You get down to 0.05mm precision in laser. which is 1/500 inch ;)
o ok like o.oo2
i d measure the pipe acurately first and size the CAD then or rather program the machine directly .
whoever needs CAD for a circle has serious issues !
are u shore it was Lazer cut. they cut wrong size. you're not going to get such a large variation in sizes doesn't sound right
Should have included the correct measurements