select
navigate
switch tabs
Esc close

Multiple finishes on anodized parts

0
F
2

My project requires a combination of chem-film for electrical conductivity in specific areas, anodizing for enhanced corrosion resistance, and bead blasting for a uniform matte appearance. My challenge is to effectively communicating these requirements on the technical drawing to ensure the finishing process is executed correctly without any misinterpretations by the finisher. My current plan is to apply a chem-film layer selectively on certain mounting points and edges that require grounding, while the rest of the part will undergo anodizing. Additionally, I want a bead-blasted matte finish applied to the entire visible surface, except for the masked chem-film areas.

For those who’ve dealt with similar requirements, what’s the best way to call out these finishes on the drawing? I’m thinking of using distinct masking symbols or a detailed finishing note but would appreciate any advice on standard practices or recommendations. Also, is there any concern with bead blasting over anodized sections in terms of wear or appearance consistency? Thank you!

Solved by Bjorn

Mixing bead blasting with anodizing is common, but be cautious with the order of operations. Typically, bead blasting is done before anodizing to create a consistent matte finish. Blasting after anodizing could wear down the anodized layer and affect the corrosion resistance or color uniformity. Also, if you’re masking for chem-film, double-check that the masking tape or material won’t leave residue that interferes with the anodizing or blasting. A test part might help avoid surprises.

    • F

      My project requires a combination of chem-film for electrical conductivity in specific areas, anodizing for enhanced corrosion resistance, and bead blasting for a uniform matte appearance. My challenge is to effectively communicating these requirements on the technical drawing to ensure the finishing process is executed correctly without any misinterpretations by the finisher. My current plan is to apply a chem-film layer selectively on certain mounting points and edges that require grounding, while the rest of the part will undergo anodizing. Additionally, I want a bead-blasted matte finish applied to the entire visible surface, except for the masked chem-film areas.

      For those who’ve dealt with similar requirements, what’s the best way to call out these finishes on the drawing? I’m thinking of using distinct masking symbols or a detailed finishing note but would appreciate any advice on standard practices or recommendations. Also, is there any concern with bead blasting over anodized sections in terms of wear or appearance consistency? Thank you!

      0
    • C

      For marking the requirements on the drawing, I’ve had success using distinct area callouts with separate finish symbols for each process. You can define masked areas for chem-film using hatching or boundary lines, and include a detailed legend that explains what each symbol or line style indicates. Additionally, adding a table that references specific zones for each finish with masking specs and tolerances helps clarify things for the finisher.

      0
      Reply
    • B

      Mixing bead blasting with anodizing is common, but be cautious with the order of operations. Typically, bead blasting is done before anodizing to create a consistent matte finish. Blasting after anodizing could wear down the anodized layer and affect the corrosion resistance or color uniformity. Also, if you’re masking for chem-film, double-check that the masking tape or material won’t leave residue that interferes with the anodizing or blasting. A test part might help avoid surprises.

      0
      Reply
Multiple finishes on anodized parts
Your information:




Suggested Topics

Topic
Replies
Views
Activity
SLA material for outdoor indicator lenses new
hi,  I'm recreating two small indicator lenses for a 1980s motorcycle restoration. These need to be clear, UV-stable, and able to handle exposure to sun and rain long-term. I’m planning to go with SLA... read more
R
0
4
May 06
Steel Advice
HelloI would like to request a quote for cold cutting tools (no temperature problems). I usually work with high-speed steels, for their hardness and the relative ease of re-sharpening, but none is offered in... read more
m
P
1
40
Apr 30
Fuel-resistant material for 3D printing
Hi! I'm restoring an older two-stroke motorcycle and need to replace a worn-out venturi nozzle that draws in fuel-air mix. I’m considering having it 3D printed, but I’m unsure which material would best hold... read more
A
M
1
47
May 02
MJF material with the best low-temp resistance
Hello, I need to produce a small housing component for an outdoor sensor unit. I thought MJF could be a good fit for prototyping and potentially low-volume production. The part needs to handle exposure... read more
J
1
100
Apr 15
Best material for vibration-dampers fan spacers
Help, I need to reduce vibrations transmitted to the enclosure and improve airflow efficiency for 3D-printed spacers for mounting cooling fans on an industrial control cabinet. These spacers need to provide some damping without... read more
Y
C
2
139
Mar 20