Spend $1,000 get $200!

Spend $1,000 get $200!

How to prep metal parts for painting or welding?

Keep these prep considerations in mind if you’ll be painting or welding your metal parts!

  • Some metals ship with the “mill finish”, a light coating of oil applied by the sheet metal mill that helps prevent corrosion and rust in transit.
    • For example, hot rolled pickled and oiled mild steel
Image of triangular laser cut hot rolled pickled and oiled part on a white background
  • Metals that receive our free deburring service will have a light oil applied as part of the process. This also helps to prevent oxidation after your parts are shipped.
Deburred metal parts with light oil

If you plan to paint or weld your metal parts after you receive them, you can use acetone to clean them up beforehand and remove all oils. SendCutSend does not offer a degreasing service since we don’t want you to receive corroded parts. For expert tips, take a look at our in-depth guide on prepping different metals for welding.

Check out our finishing services to see if there’s an option that could work for your projects! We offer anodizing, plating, and powder coating so most metal parts can be protected in style.

Start your first SendCutSend project today!

Upload your CAD design or use our parts builder and get a free instant quote on your custom laser cut parts, all delivered to your door in a matter of days.

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We proudly use hardware by PEM

Flush Standoff, 4-40, .250" Zinc plus Clear Chromate

Thread Size4-40 x .250″
Hole size in sheet (+0.003/-.0.000).168″
Minimum sheet thickness0.040″
Maximum sheet thickness.125″
Fastener materialSteel
Minimum distance hole C/L to edge0.230″
When determining the distance between two or more fasteners, you can calculate the distance by the formula, C/L to edge + 1/2 the diameter of the second mounting hole..314″
Recommended panel materialSteel/Aluminum
Coating typeZinc
Aluminum material ranges (5052, 6061, 7075)0.040″-0.125″
Steel material ranges (CRS, HRPO, HR)0.048″-0.119″