Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Related Articles


Contrasting Surface Finish

Contrasting Surface Finish

Contrasting Surface Finish


I am designing a lab scale fixture consisting of a 1'' thick plate of aluminum. On this sheet of Aluminum, there is a rectangle (on the surface, not above the surface) that I would like to have a noticeably different visual look than the rest of the sheet. I want this because I'm using the rectangle as a guide for sample preparation and the lines defining this rectangle needs to be very clear and precise. Does anyone recommend two different contrasting surface finishes that you know would do this? Or do you recommend something else all together? Please keep in mind I'm sending the drawing over to a machine shop so it will be professionally done.

Thank you very much!

RE: Contrasting Surface Finish

A sketch would help a lot.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

RE: Contrasting Surface Finish


Sure. I don't have access to the drawing so this is the best I can do right now. The blue rectangle is supposed to indicate the area that I would like to look different than the rest of the sheet. It's essentially a 0.5 by 4 inch rectangle used as guidelines for aligning samples accurately.

Thank you.

RE: Contrasting Surface Finish

Groove it, fill w/ paint



The problem with sloppy work is that the supply FAR EXCEEDS the demand

RE: Contrasting Surface Finish

Take it to a trophy shop and have them laser-etch the rectangle.

RE: Contrasting Surface Finish

Polish the surface and then bead blast the rect (or visa-versa), Whichever surface is blasted will hold die well so it can be colored.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close