Xometry.pro
en – EU
Knowledge & Community
Search
K
Quote & source your parts
Europe Europe
English DeutschFrançaisItaliano
Türkiye Türkiye
United Kingdom United Kingdom
Global Global
select
navigate
switch tabs
Esc close

Get Instant Quote

Use our Instant Quoting Engine to easily quote and source your parts online

Get a Quote
Back
 Profile
Menu
Materials Library
Manufacturing Stories & Cases
Articles
E-Books & Guides
Free Tools
Webinars
Free Courses
Community Discussions
Create Topic
Quote & Source Your Parts
Get a Quote

Edit topic

Home Xometry Community Materials & Finishes Adjustable brackets for 30 mm tubing – MJF PA12 vs CNC POM for strength and stability?

Adjustable brackets for 30 mm tubing - MJF PA12 vs CNC POM for strength and stability?

0
H
6

I’m developing a set of adjustable brackets to secure 30 mm diameter aluminum tubing in a display frame. Each bracket will have a split collar design with an M6 through-bolt for clamping and needs to maintain grip under ~2 kN axial load without damaging the tube surface. Parts will be used indoors but exposed to occasional humidity changes. Batch size will be around 100–150 pcs, and tolerances on the bore are ±0.1 mm. Would MJF with PA12 (possibly glass-filled) be a good option here, or would CNC-machined POM or another engineering plastic be better for long-term dimensional stability?

Link copied
    • H

      I’m developing a set of adjustable brackets to secure 30 mm diameter aluminum tubing in a display frame. Each bracket will have a split collar design with an M6 through-bolt for clamping and needs to maintain grip under ~2 kN axial load without damaging the tube surface. Parts will be used indoors but exposed to occasional humidity changes. Batch size will be around 100–150 pcs, and tolerances on the bore are ±0.1 mm. Would MJF with PA12 (possibly glass-filled) be a good option here, or would CNC-machined POM or another engineering plastic be better for long-term dimensional stability?

      0
      Reply
    • l

      POM is a superior material to PA12, even glass-filled. POM has higher tensile strength, better dimensional stability, and lower moisture absorption (if you’re worried about humidity). So the short answer is that you should use POM if you can.

      There is one reason why you may still need to take the PA12 over the POM, which is the complexity of your adjustable brackets. Is your planned design easy to machine? Or do you think you’d need 3D printing to achieve the design? If there are complexities you want to include that can’t easily be machined, then you’ll need to go with the MJF process (with PA12 GF) to achieve that.

      0
      Reply
      Link copied
    • b
      Hi HydroEgineerWith my 3D printer, I can incorporate continuous carbon fibers into the components. This makes parts as stable as those made of aluminium.If you are interested, you can send me a request at b.tischer@ts-cad.de.Best regards,Bernd Tischer
      Automatically translated from: Deutsch

      See original
      0
      Reply
      Link copied
Adjustable brackets for 30 mm tubing – MJF PA12 vs CNC POM for strength and stability?
Your information:




Suggested Topics

Topic
Replies
Views
Activity
Choosing PA12 vs PA12-CF for an SLS-printed automotive cam cover prototype new
Materials & Finishes
hey, I’m working on a three-piece cam/valve cover for a small automotive engine project, mainly a functional prototype that will see real under-hood temperatures, oil mist, and vibration, but not long-term production use. The... read more
h
0
5
Jan 21
Surface Finish
Materials & Finishes
I am looking to have some Aluminium samples made............without adding extra post process operations what is the best surface finish possible (um) ?
a
j
0
17
Jan 20
Choosing the right tool steel grade for a high-volume stamping die
Materials & Finishes
hi, I’m designing a cold-formed stamping die for thin stainless-steel sheets (gauge ~1.5 mm) used in an enclosure that will see around 500 k cycles. Given that abrasion resistance and dimensional stability over long... read more
J
D
1
307
Dec 17
Blasting and anodizing order on aluminum parts
Materials & Finishes
Hello! need help - am working on a set of 6061-T6 aluminum control knobs for a small instrument panel, and the surface finish is important since they’ll be handled frequently and remain visible. The... read more
J
C
1
451
Dec 09
Gasket material for short-term hydrotest on carbon steel piping
Materials & Finishes
Looking for advice on selecting a gasket material for temporary spool joints during a hydrotest on carbon steel piping in a refinery. The test medium will be demineralized water (low conductivity, no additives), and... read more
C
N
1
369
Dec 08

Edit topic