Thank you for your comment and checking out our videos. This video shows the early stage of this type of blow molding, the creation of a parison through extrusion. The parison is then clamped inside a mold and blown air expands it to the final form.

ohh i see..i will take back my words because i didn't watch the entire video.. sorry for my confusion.

This setup is kept in reverse polarity and so the material removed from the tool will be more than that of the work piece. This is done when you need to machine a very thin layer or to create surface roughness/topography. For example creating surface roughness on a orthopedic implant

I would like to know that too

Think of a 'C-shape' die, and then the top (the gap int he C) is welded as it exits the extrusion die. One simple way but may not be desired.

Mark Mark not every die is the same. at my job, we use what's called a pin tip. hot piece of metal that protrudes outward. as the material flows around the edges of the pin tip, you use compressed air, water, and a plug to keep it inflated with a hole in the middle. make sense?

Mark Mark i can explain more if needed. we extrude plastic.

there is a process that includes no welding. there is a die set up the displace the center of the material. as if it melds around the die

Yes, the inhalation of spark-induced fumes will be one of the limitations of EDM

Hannah Gor appln demands it

I joke. I run a haas cnc mill at work all day long and the idea of hand turning parts is about as primitive as the wheel to me lol.

Type of defects and why these are caused.

Plastic deformation types of roll forming.

In the case of punching a cylindrical hole is produced whereas in piercing the hole can be of any shape.

yine mi kardeş yaptı

Yah they copyright claimed our best video

it can be kerosene,oil or even deionized water depending on different things

+skydive58 The video can be purchased here > www.sme.org/ProductDetail.aspx?id=22212. It is also available for purchase on demand and digital download here > www.sme.org/ProductDetail.aspx?id=50952

+SME I have the DVD, but it's hardly usable. The problem is, SME will not switch out the DVD with a digital format unless I pay the full price. I paid IP cost once; I don't see the the need to pay it again just to switch the format.

+Abhishekk Sharma You are welcome to show the clip here on KZfaq. If you would like to show the video in its entire length, you can purchase it for on-demand or digital download here >www.sme.org/ProductDetail.aspx?id=69322 or the actual DVD can be ordered here>www.sme.org/ProductDetail.aspx?id=22211

+Joseph Palazzolo, all of our videos are available for licensing at the college level. Please contact us as [email protected] if you would like more information.