How to Choose a 3D Printing Service: The Checklist That Keeps You From Getting Burned

You have a project in your head (or in CAD) and you need someone to print it. You searched "3D printing near me" on Google and now you're staring at a confusing list of websites, online services, workshops and individual makers. How do you figure out who to actually go with?

This guide is short and practical: what to evaluate, what to ask, how to spot a serious maker.

1. What kind of printing do you need?

Before choosing the maker, you need to figure out which technology suits your project. The two big families:

FDM (Fused Deposition Modeling)

• Deposits melted plastic filament
• Typical materials: PLA, PETG, ABS, TPU, Nylon, fiber-filled (carbon, glass)
• Best for: functional prototypes, mechanical parts, spare parts, medium-sized objects
• Cost: lowest, €20-200 for a typical part
• Finish: visible layer lines unless post-processed

SLA / DLP / LCD (Resin)

• Cures liquid resin with UV light
• Typical materials: standard resin, dental, flexible, tough, castable
• Best for: miniatures, jewelry, dental models, small highly detailed parts
• Cost: medium-high, €30-500 for a typical part
• Finish: smooth, extremely fine detail, but more brittle than FDM

SLS / MJF (Powder)

• Professional industrial printing, engineering materials
• Best for: high-strength mechanical parts, small production runs
• Cost: high, €80-1000+ per part
• Finish: near-injection-molded quality, no supports needed

If you don't know which one you need, ask the maker — a serious professional will tell you straight, instead of only selling you whatever happens to be in their workshop.

2. What to ask for in the quote (the checklist)

These are the things a competent maker will ask you in order to give you a proper price. If they don't ask, be wary:

• File (STL, 3MF, STEP): the right format depends on the workflow
• Preferred material or the part's function (so they can pick it for you)
• Tolerances (required precision, e.g. "±0.1 mm for mating parts")
• Desired finish (raw, sanded, painted, polished)
• Quantity (one part vs a small batch)
• Timeline (an urgent prototype is priced differently)
• End use (prototype, functional part, decorative, food-contact?)

If a maker replies with an instant price without asking at least 4 of these, they're not quoting: they're shooting in the dark.

3. How to spot a serious maker

Here are the signals. Some good, some to run from.

Green flags

• They ask for your file and evaluate it before pricing
• They explain why they recommend one technology over another
• They show you real examples of previous work (photos, not just renders)
• They have a transparent price list or at least a stated price range
• They give you realistic delivery times (and stick to them)
• They write and speak clearly, no unnecessary jargon
• They run a properly registered business if they handle regular commercial work (a real invoice protects you — check your local tax rules)

Red flags

• Prices far below everyone else's (somebody is working below cost, and quality pays the price)
• No portfolio to show you
• Refuses to put a quote in writing
• Doesn't reply within 48 hours
• Promises "delivery tomorrow" on any kind of project
• Unspecified materials ("any plastic will do")
• Never mentions finish or post-processing

4. How much should it cost?

Three factors drive the price:

1. Machine time (long prints = more electricity + more wear)
2. Material (engineering resin runs 3-5x the cost of basic PLA)
3. Labor (preparation, post-processing, assembly)

A realistic order of magnitude for 2026 in Italy:

Prices well below these ranges = suspicious. Prices well above = there's a specific reason (technology, material, time) — ask what it is.

5. Local maker vs online service

Online service (the big national/international platforms): - Pros: volume, automation, wide material selection - Cons: impersonal communication, zero flexibility, rigid timelines

Local maker (a professional or advanced hobbyist in your city): - Pros: direct dialogue, possible hand delivery, iterative prototyping, design support - Cons: limited capacity, not every technology always available

My advice: if the project needs dialogue (an evolving prototype, critical tolerances, customizations) — go local. If you need something standard, high volume, or a rare specific technology — the online service makes sense.

6. Find a maker near you

I built Stimalo precisely because finding a serious maker in Italy is a real problem. On Trova un maker you'll find verified Italian makers, with portfolios, declared materials and real reviews from their customers. No hidden commissions, and you can request a free quote directly from whoever catches your eye.

It's new and still growing (we launched in April 2026), but we're adding makers every week.

The short version

1. Pick the right technology (FDM, resin, SLS) before picking the maker
2. Ask for a complete quote covering at least 5 things (file, material, tolerances, finish, quantity)
3. Judge the maker on portfolio, clarity, realistic timelines
4. Rock-bottom prices are a red flag
5. Local or online depends on the project — there is no absolute "better"

3D printing means having a digital craftsman at your disposal. Choose well and it stops being a commodity: it becomes a service that saves you time, money and frustration.