By the CNL Edgeworks technical team · Orange, CA
1. Longest part you polish
Working length is the first filter. The Bermaq AM2-i handles parts up to 55". The Bermaq AMI-C comes in 82.6" and 122" versions. The Kuper Euracryl ABP 310 polishes up to 122", with overhang up to 244" for turning long pieces. Portable machines like the Euracryl A26 Cube cover 31.5", or 48" with extensions.
Size for the parts you run regularly, not the one oversized job a year — but don't buy a machine you'll outgrow in two years either.
2. Thickness range
The large-format machines polish from 0.08" up to 4.72" at 0°. Capacity drops at an angle: the AMI-C handles 4.13" at 45°, the ABP 310 3.35" and the AM2-i 2.95". The portable Cube bevelers take up to 3", and the A26 up to about 1".
3. Straight edges, bevels or both
If you only need 90° edges, any polisher works. If you bevel, check the tilt range and whether it's automatic. Automatic tilting (AMI-C to +63°, ABP 310 from -3° to +63°) saves setup time when angles change between jobs. A manual head (AM2-i, 0° to +45°) is fine when angles repeat.
Shops that do a lot of small chamfers often pair a straight-edge polisher with a compact beveler such as the Euracryl V30 or V20s Cube.
4. Volume and automation
Count parts per week and how many you can load at once. The AMI-C polishes 5 to 10 pieces per cycle; the AM2-i up to 5. The ABP 310 adds a vacuum table and up to 20 clamps. More automation means less operator time per part, but a larger footprint and investment.
5. Materials
Confirm the machine and tooling are rated for everything you run: cast and extruded PMMA, PC, PETG, SAN, composites like Dibond, or laminated materials such as PMMA with paper or aluminum. Our material table lists each model's capability.
6. Tooling and finish
Ask which finishes the machine can produce and what tooling that needs — high gloss, satin and glue surfaces often use different cutters. Factor in tooling cost and resharpening over the machine's life, not just the first set.
7. Footprint, power and air
Large-format machines need 3-phase power (230/208 VAC or 380 VAC), 6 bar compressed air and dust extraction. Check floor space and access: the AMI-C is 155" × 48", the ABP 310 155" × 148", the AM2-i 90" × 52". The portable Cubes run on 230 V, or 120 V with a step-up converter.
8. Service and support in the U.S.
A machine is only as good as the support behind it. Ask who installs it, who trains your operators, where parts and tooling come from and how fast someone can troubleshoot. CNL Edgeworks handles installation, training, parts, tooling and service from Orange, California, and we run the same machines in our own production.
Test before you buy
Specs narrow the field; a test polish on your own material settles it. Book a demo or send samples, and use the Machine Finder to see which models fit your numbers.