Bath Interferometer

These are the plastic parts need to make a high quality, inexpensive (<$70) Bath Interferometer to test telescope materials.

Other

Creative Commons Attribution Share Alike

Commercial use is allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.

Learn more or download attribution tags

Attribution

https://www.thingiverse.com/thing:2843786

Description

Dale's Interferometer is great but it had 3 different screw sizes (imperial). I standardized on one size: M3 (metric 3mm) threads which I have tons of and are at my local home depot. Also I added a paper holder. The paper holder still uses Dale's #8 screw but works with M3 as well. I also made the shaft that supports the ball and socket mirror holder thicker and stronger.

I sell the metal parts for this or have information where you can get them and optical parts on your own. Also I have assembly and usage videos for this and the xyz table. All here:
http://gr5.org/bath/

Supports: No

Filament_material:
Print everything in PLA or nGen except nylon for 3 parts (see below)

Notes:
None of the parts need support. I strongly recommend nylon for the mirror_socket and for the lens holder and the cube holder. These need to stretch around something and snap into place. I broke a few pla parts until I switched to nylon for these. All the other parts I printed in PLA but any plastic will do.

The lens holder might appear initially like it needs support but it doesn't - nothing is steeper than 45 degree overhang.

I can be contacted for my suppliers of hardware. Some of the information (like what lens size to get) is here: http://gr5.org/bath/

I'm willing to sell any needed parts (I have a webstore) or give you links to where I buy everything if you would need to make the same product and/or sell it yourself (I'd be happy to shut down my store if someone else made these as cheaply).

Materials and methods

PLA and Nylon - see description

Documents

Issues

Issues are used to track todos, bugs or requests. To get started, you could create an issue.

Comments

269c77b576d6f30b92552d48c7bba569?default=blank&size=40gr published this design ago