What drives the price of a custom part

Every custom part price comes down to four levers: material, machine time, quantity, and finishing. Understanding how each one works - and how they interact - lets you make small design decisions that compound into meaningful savings without giving up what the part actually needs to do.

Key takeaways

• Material cost includes the stock you cut from, not just what ends up in the finished part - nesting reduces waste for everyone
• Machine time is usually the largest lever; cut-line length and pierce count are the two numbers that move it most
• Quantity is the fastest way to drop the per-part price; our instant quote shows the breaks at 1, 10, 25, 50 and 100
• Finishing is the most underspecified lever - "as clean as it comes off the machine" and "showroom-ready" are very different quotes
• Sending editable files (SVG, DXF, STEP) lets us nest and optimize before cutting

How does material cost actually work in fabrication?

You pay for the material the part is made from, plus the waste inherent in the process. In laser cutting, that means sheet stock: acrylic, plywood, MDF, hardboard, Delrin. A 600 × 400 mm sheet of 3 mm clear acrylic has a fixed cost whether your parts use 40% of it or 90%. That's why nesting matters: when we arrange multiple parts from your order (or combine your parts with another job's stock) onto a single sheet, everyone pays less per part.

Material choice compounds with sheet thickness. Switching from 6 mm to 4 mm acrylic on a bracket that doesn't need the extra rigidity cuts material cost and (because thinner cuts faster) machine time simultaneously. We'll flag it in the quote if there's an obvious substitution that doesn't compromise function.

Why is machine time usually the biggest lever?

Machine time is the cost that scales fastest with design complexity. A laser cutting a simple 150 mm circle takes under ten seconds. The same laser cutting a detailed snowflake outline at the same size might take three minutes. An engraved logo inside the circle could add another five.

Cut-line length is the primary driver in laser cutting, followed by pierces: every separate cut the laser has to start, so twenty small holes cost more than one large one. Every millimetre of vector path costs machine time, which is why we encourage simplifying outlines, reducing internal engrave areas, and avoiding decorative perforations that look good on screen but run slowly on the machine.

Why does ordering more lower the price per part?

Some of the work on every job is the same whether you order one part or fifty: checking the file, loading and squaring the sheet, cleaning the parts and packing them. Spread across a batch, that share shrinks per part. Our instant quote builds this in, so the price per part drops automatically as quantity rises, most steeply from 1 to 10 pieces, and very small parts have a per-part minimum. Orders also have a $25 minimum, which the quote shows as its own line.

Design changes that come in after cutting has started mean starting again. Getting the design right before you order is worth more than the fastest turnaround after.

How much does finishing add, and what should you specify?

Finishing is the most variable and most underspecified lever in custom fabrication. "Finished" means something different to everyone, so we try to ask before we quote rather than assume.

In laser cutting acrylic, cut edges come off with a slightly frosted appearance. Flame polishing restores optical clarity to edges - it looks beautiful, but it adds labor proportional to total edge length. For parts that are painted, bonded, or installed out of sight, frosted edges are invisible and flame polishing is pure waste. For a display piece or retail product, it's worth every penny.

What design choices reduce cost the most?

The highest-leverage design changes fall into a consistent list:

Simplify geometry. Every curve segment, every internal cutout, every decorative feature adds cut time. If a slot can be rectangular instead of rounded, it cuts faster. If a logo can be a sticker instead of an engrave, the laser job is cheaper.

Order in batches. Even a batch of three or four makes a visible difference to the price per part. If you know you'll need more of a part later, ordering together is almost always cheaper than ordering twice.

Send editable files. An SVG lets us check and optimize cut paths before machining. A DXF or STEP file gives us exact dimensions to cut from. A PDF or rasterized image forces us to redraw, which takes time and introduces risk of error.

Specify the finish you need, not the finish you can imagine. "Clean enough to glue" and "showroom" are genuinely different line items. We'd rather ask once and get it right than re-quote after you've seen the first batch.

Curious where the money goes on your part? Upload it for an instant price and change the material and quantity to see each lever move, or read how our pricing works.