Choosing the Best Material for a Transparent Casing for Neodymium Magnets

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Discussion Overview

The discussion revolves around selecting an appropriate transparent material for a casing designed to encase Neodymium magnets without affecting their magnetic field. Participants explore the implications of material choice, particularly focusing on plastic and its thickness, as well as the design specifics of the magnet casing.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the best transparent material for a strong casing that does not shield the magnet's power.
  • Another participant asserts that plastic will have no effect on the magnetic field.
  • Questions arise regarding the impact of plastic thickness on the magnetic field, specifically whether 3mm of acrylic will affect a Neodymium magnet disc with specified dimensions.
  • A participant suggests that while plastic itself may not affect the magnetic field, increasing the magnetic gap due to the casing could weaken the field.

Areas of Agreement / Disagreement

There is no consensus on the specific effects of plastic thickness on the magnetic field, as some participants assert it will not have an effect while others raise concerns about the potential impact of widening the magnetic gap.

Contextual Notes

The discussion does not clarify the assumptions regarding the properties of different plastics or the specific applications of the magnet casing, leaving these aspects unresolved.

Who May Find This Useful

Individuals interested in materials science, magnet applications, or engineering design may find this discussion relevant.

PhysicsRolla
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Hello

I am building a casing for Neodymium Magnet. I don't want to shield the power of the magnet in any way, and I want the casing to be strong. What is the best material that i can use?
It also has to be transperant.

Will plastic effect the magnetic field and by how much. Will the thickness matter much from let's sat 1mm to 2mm.

Please help. Thanks in advance.
 
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PhysicsRolla said:
Hello

I am building a casing for Neodymium Magnet. I don't want to shield the power of the magnet in any way, and I want the casing to be strong. What is the best material that i can use?
It also has to be transperant.

Will plastic effect the magnetic field and by how much. Will the thickness matter much from let's sat 1mm to 2mm.

Please help. Thanks in advance.

Welcome to the PF.

Plastic will have no effect on the magnetic field.

What shape is your magnet? What is the application?
 
Thank you for the welcome, i always wanted to join the physics forum, i finally had a reason to do it.

I sincerely thank you for your answer.

What is the thickness of plastic that will effect the field of the magnet? It is a disc 2 inches diameter and 1 inch thick.
 
will 3mm of acrylic plastic effect the magnetic field of Neodymium Magnet disc 2 inches diameter and 1 inches thick?
 
PhysicsRolla said:
Thank you for the welcome, i always wanted to join the physics forum, i finally had a reason to do it.

I sincerely thank you for your answer.

What is the thickness of plastic that will effect the field of the magnet? It is a disc 2 inches diameter and 1 inch thick.

PhysicsRolla said:
will 3mm of acrylic plastic effect the magnetic field of Neodymium Magnet disc 2 inches diameter and 1 inches thick?

As I said, plastic will not affect the magnetic field. Unless adding plastic makes you widen the magnetic gap of the magnet, of course. Widening the magnetic gap will weaken your magnetic field.

Can you post a sketch of what you are building?
 

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