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Questions tagged [molding]

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0
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1answer
23 views

Injection nozzles and static mixers for LSR - How do i prevent an uncleanable blockage between runs?

I'm trying to implement a new material in our processes, and that's a 2 part, highly viscous (500-1000 Pa s) liquid silicone rubber. I will also be adding a pigment, so that's 3 components that need ...
4
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1answer
38 views

How are non-continuous internal threads palstic inejction molded?

I'm trying to figure out how the heck some of these plastic bottle caps are injection molded. By having the thread on the inside of a cap, this obviously creates an undercut. Now I've watched some ...
1
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1answer
36 views

Is it possible to replicate a motorcycle engine cylinder head?

Is it possible to create a mold of an aluminium motorcycle cylinder head so that you can create an exact replica with melted aluminium?
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2answers
45 views

Looking for translation of “закладная втулка” (threaded bushing?)

Sometimes we need a strong threaded joint in some part that is produced using molding. Say, this part itself is plastic. Then we design the part with a hole and insert there a.. "threaded bushing"? I ...
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2answers
34 views

What steel to use? What thickness and width? What angles to use? [closed]

I am trying to develop my own spring steel version of a carbon fiber running blade that you might see in the paralympics. Except mine is for someone who still has their foot/leg. Nothing like that ...
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0answers
41 views

Influence of shear force on pressed part with steep walls

I'm working on a project that involves pressing a softened thermoplastic sheet in a two-part mold to form a part 0.090" thick. None of us at our small company are experts in matched molds, and we've ...
3
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1answer
55 views

Molding thermoplastic over sensitive components

I have an electronic assembly that is heat sensitive. Due to the incorporation of a CR3032 coin cell battery, it can survive being heated to a maximum of 60 degrees C. I want to coat this assembly in ...
4
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1answer
96 views

Purpose and name of fine pitch marks on a cast metal part

I have seen this kind of mark on various cast metal parts. This is an image of the base casting of a hard disk drive made by HGST. What are these marks for? What are they called?
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3answers
94 views

How to build a transparent double hollow helix at home

I'm building a product prototype for a client. We are trying to figure out the best way to build a hollow helix capable of transporting liquid at home. Something similar to this: So far our best ...
0
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1answer
76 views

Can a Plasma Cutter use for melt metals?

Can a Plasma Cutter use for melt metals like Iron, Brass, Stainless Steel ect, ?. Particularly for molding purposes. If can't, is there any other electric item that doesn't use gases (Acetylene, ...
1
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1answer
86 views

Plastic Vacuum Cleaner Part — Why did they design it this way?

I've designed a whole lot of different parts and products in my time: Plastic, metal, lighting products, electrical products and automotive parts. I generally can look at a product and figure out why ...
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2answers
280 views

Pouring aluminum into another block of Aluminum

I have a 120mmx120mm brushless fan with an Aluminum frame, which as you can imagine, isn't very thick. I want to thread the base, so I can mount it with a fairly large screw. For that I need to add ...