Custom Laser-Cut Brackets and Mounts

What counts as a laser-cut bracket or mount?

A laser-cut bracket is a sheet part that holds one thing to another: a flat tab with two holes, an L bracket with one bend, a Z bracket that offsets a sensor from a rail, a gusset that stiffens a corner, or a cable mount with a slot for a tie. A mount is the same part named for what it carries: a photoeye or proximity sensor, a motor or gearbox, a valve, a panel or a cable run. Brackets for robot cells, conveyors and one-off machines sit alongside the other parts on the robotics and automation and custom machinery pages.

A bracket usually needs more than the cut: a sensor mount wants an adjustment slot and a tapped hole, a motor mount wants a bend and PEM studs, and most want a finish. Buying the blank in one place and the bends, threads and coating in others means several purchase orders and several copies of the drawing to keep in step. The laser-cut parts hub lists every operation that can ride on the one order instead, and the bracket comes back finished.

Which material should a laser-cut bracket be?

5052-H32 aluminum is the usual choice for a bracket with a bend: 5052 has good formability (source 1), while 6061 in the T4 and T6 tempers bends only with great caution and probably a larger radius to avoid cracking (source 2). 6061-T6 suits a flat bracket that gets tapped holes or a machined feature. It is the stronger alloy, with a typical yield strength of 39 ksi (source 3) against 28 ksi for 5052-H32 (source 4), and it machines well (source 1). In aluminum, a bracket near salt water points to 5052, which resists seawater and salt spray (source 4).

Thin steel brackets are cut from cold-rolled sheet; cold rolling improves the surface finish and holds tighter tolerances (source 5). Heavier mounts and gussets come from plate such as A36, a common structural grade made as plate, bars and shapes and readily welded (source 6). Bare steel rusts where it meets water and oxygen, and a coating such as paint is what keeps them apart (source 7), so a steel bracket that is not going inside a painted assembly usually gets powder coat. 304 stainless is a standard material for food handling and processing equipment (source 8), which is why it covers washdown mounts. The aluminum and steel pages carry the grade and edge notes for each metal, including the sheet grade and plate condition to write on the print. Other alloys and plastics quoted on request. Name the grade on the print.

What can go on the same print?

Adjustment slots are cut in the flat with the rest of the profile, so a sensor can be lined up after the machine is built. Call out a tapped hole by thread and depth (1/4-20 through, M6 x 1.0) and a countersink by angle and the screw it seats; the tapped and countersunk holes page has the callout detail. PEM self-clinching nuts and studs go on the print by part number at a located hole. For each nut, PEM’s table sets the hole size and a minimum distance from the hole center to the sheet edge (source 9), so the part number decides how close to an edge the hole can sit.

Bends go on the print as angle, inside radius and direction, with the flange dimension that has to be held. The inside radius is quoted as drawn, with a note if it won’t form. The flat pattern is worked out from the bend angle, the inside radius and the thickness (source 10), so a formed STEP with the radius on the print unfolds to a blank that folds back up to size. Radius limits, flange length, bend relief and how close a hole can sit to a bend are covered on laser-cut and bent brackets.

Aluminum brackets can be anodized clear, black or in a dyed color (source 11) or powder coated. A finish called out on the print is quoted with the part, and the finishing page covers how each finish treats a cut edge.

What tolerances matter on a laser-cut bracket?

Two things decide whether a bracket bolts up: hole position and bend angle. On a flat bracket the holes and the outline are all laser-cut features, so the hole pattern carries the laser’s profile tolerance, and the quote states the tolerance used. The laser cut tolerances guide explains kerf, edge taper and small holes.

A bend adds a tolerance of its own. Sheet springs back toward flat after forming and has to be over-bent to reach the angle (source 10), so a hole located from a bend carries the bend’s tolerance on top of the cut. Holes that have to line up with a mating part belong on the same flat, and self-clinching nuts should not go next to bends or other highly cold-worked areas (source 9).

When a hole has to locate tighter than a cut hole holds, it is cut undersize and reamed or machined after cutting, and that feature is quoted with the part; tapped and machined as one order shows how to call it out. If a tolerance on the print is tighter than sheet work can hold, the quote says so and names a route that can.

Laser-cut or machined: which bracket to order?

A laser-cut bracket is the right buy when the part is sheet of one thickness and the holes, slots and bends do the work. A machined bracket is the right buy when the print has a pocket, a boss, a stepped thickness or a face called out flat or square to another. Milling cuts flat faces and flat-bottomed cavities (source 12), which a cut through sheet cannot, and those brackets are on the custom machined brackets page. The laser vs waterjet vs CNC comparison walks through the route decision for a bracket-sized part.

What should the print carry, and how does ordering work?

Name the material and thickness on the print. The PDF should also carry the temper, bend angles, radii and direction, thread and hardware callouts, the finish and color, and the revision. Ask for more than one quantity, such as 1, 25 and 100, and the quote shows each. With no drawing, a dimensioned sketch, a new sample part or photos with a ruler in frame are enough to start; the CAD work is then quoted as its own line, and the quote lists anything missing. A fully dimensioned 2D PDF is quoted without a CAD line. The file guide for laser cutting shows what a good laser print carries.

Lead time starts at order approval. Put your need date in the part description and the quote answers it. Vendor setup takes a day: W-9, NDA and net terms available. If a part doesn’t match the print, it’s remade or credited.

Sources

All accessed 27 September 2026. Where a figure here differs from your print, the print governs.

1. Clinton Aluminum, "6061 Aluminum VS. 5052": clintonaluminum.com/6061-aluminum-vs-5052/ (5052 has good formability; 6061 offers good machinability).

2. Clinton Aluminum, "Which Aluminum Alloy Bends Best?": clintonaluminum.com/which-aluminum-alloy-bends-best/ (bending 6061 in the T4 and T6 tempers requires great caution and probably larger bend radii to avoid cracking).

3. Wikipedia, "6061 aluminium alloy": en.wikipedia.org/wiki/6061_aluminium_alloy (T6 typical yield strength 270 MPa, 39 ksi).

4. Wikipedia, "5052 aluminium alloy": en.wikipedia.org/wiki/5052_aluminium_alloy (H32 yield strength 193 MPa, 28,000 psi; exceptional corrosion resistance against seawater and salt spray).

5. Wikipedia, "Rolling (metalworking)": en.wikipedia.org/wiki/Rolling_(metalworking) (cold rolling improves the surface finish and holds tighter tolerances; sheet and strip are common cold-rolled products).

6. Wikipedia, "A36 steel": en.wikipedia.org/wiki/A36_steel (a common structural steel in the United States; plates, structural shapes and bars; readily welded by all welding processes).

7. Wikipedia, "Rust": en.wikipedia.org/wiki/Rust (iron in contact with water and oxygen rusts; coatings such as paint isolate the iron from the environment).

8. Wikipedia, "SAE 304 stainless steel": en.wikipedia.org/wiki/SAE_304_stainless_steel (food handling and processing equipment; excellent resistance to a wide range of atmospheric environments; pitting and crevice corrosion in warm chloride environments; 316 the preferred alloy in tropical salt water conditions).

9. PennEngineering, "CL Self-Clinching Nuts" bulletin, 2026: pemnet.com/wp-content/uploads/sites/2/2022/06/cldata.pdf (hole size and minimum distance from hole center to edge for each thread; 1/4-20 CLS in shank code 1: minimum sheet 0.056 in, hole 0.344 in, 0.34 in to edge; only SP or SMPP nuts in stainless sheet; not adjacent to bends or highly cold-worked areas; steel or stainless fasteners not installed in aluminum before anodizing or finishing; not installed on the pre-painted side of a panel; PreTect thread masking plugs for the paint or powder coating process, with the TP suffix ordering a nut with the plug pre-installed).

10. Wikipedia, "Bending (metalworking)": en.wikipedia.org/wiki/Bending_(metalworking) (bend allowance from bend angle, inside radius, K-factor and thickness; springback means the sheet must be over-bent to reach the angle).

11. Wikipedia, "Anodizing": en.wikipedia.org/wiki/Anodizing (most widely used on aluminum alloys; dyed colors including black, or clear).

12. Wikipedia, "Milling (machining)": en.wikipedia.org/wiki/Milling_(machining) (face milling cuts flat surfaces and flat-bottomed cavities).

13. Wikipedia, "Unified Thread Standard": en.wikipedia.org/wiki/Unified_Thread_Standard (a thread is designated by diameter and threads per inch; 1/4 in coarse is 20 threads per inch).

14. Wikipedia, "Sheet metal": en.wikipedia.org/wiki/Sheet_metal (gauge is defined differently for ferrous and nonferrous metals; 16 gauge is 0.0598 in in sheet steel, 0.0625 in in stainless and 0.0508 in in aluminum; ASTM A480 on gauge numbers).

15. Wikipedia, "Powder coating": en.wikipedia.org/wiki/Powder_coating (thicker coatings than conventional liquid coatings; used mainly on metal objects).