3D Printed Jigs and Fixtures: A Faster, Cheaper Option for Small Shops
For many small shops, a 3D printed jig or fixture costs a fraction of a machined one and arrives in days instead of weeks. If you run a machine shop, fab shop, race shop or engineering firm around Mooresville and Lake Norman, printed tooling is one of the easiest ways to save time on the floor.
This post covers what printed jigs and fixtures are good for, how they compare to machined aluminum, which materials to pick, and when printing is the wrong call.
What jigs and fixtures do
A jig guides a tool, like a drill guide or a cutting template. A fixture holds a part steady while you machine, weld, inspect or assemble it. Most shops need dozens of them, and each one is custom to a single part or job.
Common printed shop aids include:
- Drill and assembly guides
- Soft jaws and nests that hold parts without marring them
- Go/no-go and inspection gauges
- Welding and gluing alignment jigs
- Wire harness boards and cable routing guides
- Part trays, tool holders and shadow boards
Printed vs. machined aluminum
Printing wins on speed, cost and design freedom for most low-load tooling. Machined metal still wins where you need tight tolerances, heavy clamping or high heat.
| Factor | 3D printed | Machined Aluminum |
|---|---|---|
| Lead Time | Typically a few days | Often 1-3 weeks depending on shop load |
| Cost per part | Low; mostly material and print time | Higher programming and machine time |
| Design Changes | Edit the cad and reprint | New program and setup of each revision |
| Weight | Light easy to handle all shift | Heavier |
| Complex Shapes | Contoured nests and internal channels are easy | Limited by tool access |
| Strengh and Heat | Good with engineering materials; lower then metal | High |
| Tolerances | Good for most fixtures | Best for precision locatin surfaces |
A useful middle ground is a printed body with metal where it matters: heat-set threaded inserts, steel dowel pins or bushings pressed in for wear points.
Example: a corner jig
One of our recent jobs was a corner jig that holds two pieces at a perfect 90° while they are fastened or glued. Instead of measuring and clamping each corner by hand, the operator drops the parts into the jig and gets the same square corner every time.
Because the jig was printed, it was designed around the customer's exact parts and could be adjusted and reprinted quickly if anything needed tweaking.
Choosing a material
Match the material to the load, heat and chemicals the tool will see on your floor.
| Material | Best for | Watch out for |
|---|---|---|
| PLA | Quick test fit template, trays | Softens with eat not for hot shops or cars |
| PETG | General shop aids, light chemical exposer | Can flex under heavy clamping |
| ASA-CF | Stiff fixtures, outdoor or warm areas | More brittle then unfilled plastics on impact |
| ABS-GF | Rigid fixtures that hold shape under load | Needs good design for thin walls |
| PPA-CF | High Strengh, High heat tooling, Near egine or weld areas | Higher cost best for demanding jobs |
| TPU 95A | Soft jaws, pad bumpers that wont scratch parts | Too flexable for locating fixtures |
| TOUGH 2000 RESIN | Precise gauges and small detailed parts | Smaller build size then FDM |
Not sure which to pick? Send us the part and how the tool will be used, and we'll recommend one.
When printing isn't the right choice
We'll tell you if a machined tool is the better fit. Stick with metal when the tool:
- Takes heavy, repeated clamping forces or impacts
- Sits right at a weld or other very high heat source
- Needs precision locating surfaces held to very tight tolerances
- Will run hundreds of thousands of cycles with heavy wear
Even then, a printed version is often a fast, cheap way to prove the design before you pay for the machined one.
Get a quote from a local Mooresville shop
Product Path 3D prints jigs, fixtures and prototypes for manufacturers and engineering firms across Mooresville, Cornelius, Huntersville, Davidson, Statesville and the Charlotte area. Send us a STEP or STL file, or just a photo and rough dimensions, and tell us how the tool will be used.
Request a quote and we'll recommend a material and get back to you with pricing and lead time.