The Questions Everyone Asks About 3D Printing
FDM and resin, at the kitchen table or on a production floor — the same handful of problems and questions come up again and again. Here are the honest answers and the actual fixes.
Whether you just unboxed your first printer or you're weighing whether to add 3D printing to your business, you'll run into the same questions. Why won't this stick? Why did the supports fail at 3am? Is resin safe around my kids? How strong is this actually? What does a real production run cost? We field these every week at Dreaming3D, so we put the most common ones in one place.
Below are the failures that trip people up most — split into FDM and resin, since they fail in completely different ways — followed by the questions home users and businesses ask most. If a fix feels like more time than it's worth, that's exactly the line where outsourcing starts to make sense.
FDM Problems That Come Up Most
FDM / FilamentFused deposition modeling fails mostly at the nozzle, the bed, and the frame. Master the first layer and most troubles disappear — adhesion problems account for the majority of failed prints reported in maker communities.
First layer won't stick / bed adhesion
Warping & curling corners
Stringing & oozing
Under-extrusion & clogs
Layer shifting
Weak parts / layer delamination
Ghosting / ringing & elephant's foot
Resin Problems That Come Up Most
Resin / SLA-MSLAResin printing is a balance of light, adhesion, and peel force. It fails differently than FDM — most issues trace back to exposure, supports, or the film and screen. And every job ends with washing and curing, where a lot of “bad prints” are really finishing problems.
Nothing on the plate / “pancake” on the FEP
Supports fail / model drops into the vat
Layer separation / delamination
Loss of detail / bloated, “fat” prints
Sticky surface after printing
Hollow parts crack or “explode”
Repeating defect in one spot / screen wear
A note on resin safety
Most “should I even do this at home?” questions are really about resin. Uncured resin and its fumes irritate skin, eyes, and lungs, and it needs gloves, eye protection, ventilation, alcohol washing, and UV curing away from food, kids, and pets. It's manageable — but if you'd rather skip the chemicals and disposal entirely, that's the single most common reason people send resin work to a service like ours.
The Questions We Get Asked Most
Home BusinessTap any question to expand. These are the real ones — from first-time hobbyists and from companies deciding whether to print in-house or outsource.
+Should I choose FDM or resin?FDM vs Resin
Pick the method that matches the part. FDM is the choice for larger, functional, load-bearing pieces at lower cost — brackets, enclosures, jigs, fixtures. Resin wins when you need fine detail and a smooth surface: miniatures, jewelry, dental and display models, intricate prototypes.
The trade-off: FDM parts are generally tougher for mechanical use, while standard resin is crisp but more brittle (tough and engineering resins narrow that gap). Many projects use both.
+Is resin 3D printing safe to do at home?Safety
It can be, with the right precautions. Liquid resin and its vapors can irritate skin, eyes, and airways, so you need good ventilation, nitrile gloves, eye protection, and a dedicated area away from food, children, and pets.
Every part also needs an isopropyl-alcohol wash and a UV post-cure, plus safe disposal of waste. The handling is the main reason hobbyists outsource resin jobs rather than set up at home.
+How strong are 3D printed parts, really?Strength
Strength depends on material, print orientation, infill, and wall count — not just “is it 3D printed.” Well-tuned FDM parts in PETG, ABS, ASA, or nylon handle genuine mechanical loads, with the weak axis running along the layer lines.
Standard resin is detailed but brittle; tough and engineering resins improve impact resistance. For anything load-bearing, FDM in the right material is usually the safer starting point.
+How much does a 3D print cost?Pricing
Four things drive price: material used, machine time, electricity, and post-processing labor (support removal, washing, curing, finishing). Small parts can run a few dollars; large or highly detailed jobs cost more.
In San Diego, high electricity rates and hands-on labor factor in more than people expect. For repeat work, batch and production quotes get cheaper per unit as volume goes up.
+How long does a print take?Turnaround
From under an hour to several days. FDM time scales with size, layer height, and detail. Resin prints by total height, not volume, so a full plate of short parts can take about the same time as one tall part.
For commercial orders we give you a realistic lead time up front, including post-processing.
+Are 3D printed parts food safe or dishwasher safe?Food contact
Generally no — not without extra steps. Standard FDM prints have microscopic gaps that can trap bacteria, and most resins are never food safe. Food contact requires a food-safe material plus sealing, or a certified food-safe coating.
Resin should never touch food, and dishwasher heat can warp PLA.
+Will my print survive outdoors, sunlight, or a hot car?Durability
PLA is the wrong choice — it softens in heat and degrades under UV, so it fails in cars and outdoors. PETG, ASA, and ABS handle heat and sun far better and are the go-to for outdoor and automotive parts.
Resin can yellow and grow brittle under prolonged UV. If your part lives outside or in a vehicle, ask for a UV- and heat-stable material from the start.
+Do you keep my design? Who owns the files?IP
You do. Your design and your files are yours. We treat customer models as confidential, print them for you, and don't resell or share them. If you send a file or a physical part to scan, it stays your property.
+Can you handle production runs and batch orders?Commercial
Yes. Beyond one-off prototypes, we run repeat and batch production — keychain runs, 100-unit orders, branded accessories, ongoing repeat jobs — with per-unit pricing that improves at volume and consistent quality control.
Send us the part, the quantity, and the deadline, and we'll quote it.
+Should my business buy a printer or outsource?Buy vs outsource
Buy if you print constantly and have staff time for calibration, maintenance, drying, and post-processing. Outsource if your needs are occasional, varied, or deadline-driven — a service absorbs the failed prints, wasted material, equipment cost, and learning curve.
Plenty of San Diego businesses outsource to us rather than tie up an employee babysitting machines.
DIY It, or Hand It Off?
There's no shame in either answer. Here's the honest dividing line we give people.
Do it yourself when…
- →You're learning and the iteration is the point
- →The parts are simple, forgiving, and not time-critical
- →You enjoy tinkering and have ventilated space for resin
- →Volume is low and a failed print costs only time
Hand it to Dreaming3D when…
- →You need it right the first time, on a deadline
- →It's resin and you'd rather skip the chemicals and disposal
- →You're scaling to a batch or production run
- →You need scanning, repair, or a finish you can't get at home
Stuck on a Print? Bring It to Us.
Dreaming3D handles FDM and resin printing, 3D scanning, custom parts, production runs, and printer repair across San Diego. Send your file or describe the part and we'll get you a quote.
- FDM & Resin 3D Printing: The Problems and Questions That Come Up Most
- Why Won't It Stick? A San Diego Shop Answers 3D Printing's Most-Asked Questions
- 3D Printing Troubleshooting + FAQ: Every Common FDM and Resin Issue, Solved
San Diego 3D printing & design — FDM, resin, scanning, repair, custom PCs, and production runs.