Molding Definition and 9 Threads

Is it possible to create following two shapes from glass using currently known glass mass production techniques? Shape #1: bottle with a prolonged neck that continues into the inner space, like this (cross section): | | | | /| |\ / | | \ / \ / \ | | |...

Im currently trying to calculate the pressure inside an injection mold. Does anyone have experience with similar problems? I need to use coeficient of Thermal expansion and volume. please help .

Hi folks, I saw a previous (closed) thread stipulating that mold can't grow on sugar. I have an old package of dark Muscovado sugar from Mauritius stored in the original plastic bag; it has small area of white here and there on the clumps of sugar which looks like mold. Water and nutrients are...

Hello. I'm an engineering student so don't make fun of me. I'm trying to mold an elastic cylinder. My plan for doing this is to: 1. Print out a plastic mold. 2. Buy elastic material. 3. fill the mold with elastic material. 4. wait 24 hours. I'm trying to make the cylinder as elastic as...

Hi, I was just curious, I needed verification, I am reading up on PIM process and I see they use "binders" to keep the shape of the powders before sintering, anyways as I've been reading the binder consists of a surfactant, a filler and a backbone, I was just curious as to what ratios are there...

Hi What is the easiest plastic to mold and shape once heated, and that is fairly strong once cooled down. I was thinking of polystyrene form yogurt tubs or CD cases, because apparently if you heat it above 95 degrees it is easy to extrude and form I want to make a connection to a valve...

Hi all, Here are some questions for injection molding: 1. How to calculate total mold volume? 2. How to calculate how many parts can be produced? 2. How to calculate clamping force? Further details of the question is in the attachment. Thx for any answers might given. ^^

Hello, I need some help with the general very basic cost analysis of an injection molding machine and a mold for a particular part (Plastic Gear). For example, a Gear made out of Nylon plastic resin. The gear dimensions are roughly 2 cm diameter (20 teeth). Something like the black one...

Im building an outside vertical axis wind turbine. i need to build the (about 20) plastic fins that are going to be used to form the helix (which is the wind turbine) im trying to build the fins that are used on the helix wind turbine. a good video of it is on youtube: a crappy picture of...