Get a Good Reflective Surface for DIY Curved Mirror

  • Thread starter Thread starter Shawnzyoo
  • Start date Start date
Click For Summary

Discussion Overview

The discussion revolves around constructing a curved mirror from an old satellite dish, focusing on the selection of materials for achieving a good reflective surface. The scope includes practical suggestions and personal experiences related to DIY projects.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested, Experimental/applied

Main Points Raised

  • One participant suggests using reflective mylar film or aluminum foil along with spray on contact cement as potential materials for the reflective surface.
  • Another participant shares their experience from 1992, detailing the conversion of a 12-foot dish using 1-foot square mirror tiles, noting the effectiveness of this method for focusing light and igniting materials.
  • A later reply questions the intended application of the mirror, asking whether it is meant for visible light, radar, or other wavelengths, indicating the importance of the specific use case in material selection.

Areas of Agreement / Disagreement

Participants present multiple approaches and materials for creating a reflective surface, but there is no consensus on the best option or the specific application of the mirror.

Contextual Notes

Participants do not clarify the exact requirements for the reflective surface, such as the wavelength of light or other specifications, which may influence the effectiveness of the suggested materials.

Who May Find This Useful

Individuals interested in DIY projects involving optics, particularly those looking to repurpose materials for creating reflective surfaces.

Shawnzyoo
Messages
104
Reaction score
0
I am attempting to build a curved mirror from an old satellite dish.
The problem lies in the fact i am not sure what to use to get a good reflective surface.
any suggestions would be most appreciated.
thanks
 
Engineering news on Phys.org
Reflective mylar film or aluminum foil and some spray on contact cement?
 
holy undead thread batman!

back in '92 I converted a 12 foot dish using 1 foot square mirror tiles

by attaching the mirrors with two drywall screws at each corner the dish's curve produces a focal point roughly where the lnb was

if memory serves there was room for 112 tiles w/o overlapping mirrors


don't know what the exact concentration ratio was but it worked great for igniting wood, flash boiling water or melting lead

(if you have access to scraps from a glass shop hexagonal or triangular tiles could provide better coverage with smaller gaps)


*fiddlesticks, thought there were more pics but these were all I could find
 

Attachments

  • fibreglass dish.jpg
    fibreglass dish.jpg
    7.9 KB · Views: 563
  • fibreglass focal point.jpg
    fibreglass focal point.jpg
    9.7 KB · Views: 524
By "mirror" do you mean for visible light? For radar? For some other wavelength range?
 

Similar threads

  • · Replies 38 ·
2
Replies
38
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 19 ·
Replies
19
Views
6K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 6 ·
Replies
6
Views
3K
Replies
7
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 7 ·
Replies
7
Views
5K
  • · Replies 6 ·
Replies
6
Views
4K