Longer reads on the questions the calculators raise: what a heated bed really draws, why parts come out undersized, where failed prints eat your margin and when multi-color is worth the purge.
Newest article
Every 3D printer calibration formula on one page: e-steps, rotation distance, steps per mm, flow ratio, Vref, belt tension, skew, shrinkage, holes and layers.
3D printer 24V vs 48V: 48 V on the motors holds torque to higher speeds. Heaters, fans and the board stay on 24 V. What you need, what it costs, the math.
What voltage are 3D printer fans? Usually 24 V, matching the printer's supply; older printers use 12 V and some boards 5 V. How to check and fix a mismatch.
What power cord does a 3D printer use? Most take a standard PC cord: NEMA 5-15P plug to IEC C13. Ratings, gauge, and the cords for Ender 3, Bambu Lab and Prusa.
A 3D printer can trip a breaker three ways: overload, ground-fault leakage (GFCI) or an arc-like signal (AFCI). Find which one tripped, then the fix.
Set a 3D printer's voltage switch to 115 V in the US and 230 V only on 200 to 240 V mains. Where the switch is, how to check it, and what a wrong setting does.
ABS shrinks about 0.4 to 0.8% in X and Y as it cools, but one printed-part study saw it grow 0.92% in Z. Figures by source, plus the OrcaSlicer values.
ABS vs ASA shrinkage: about the same. Resin and filament data sheets put both at roughly 0.4 to 0.7%, so start ASA with ABS compensation and measure.
Bambu Lab printer voltage: the A1, A1 mini, P1 and X1 take 100 to 240 VAC; the H2D, H2S, P2S and X2D ship as 110 V or 220 V versions. Amps per model.
Bambu Lab publishes no ABS shrinkage value. Start at 99.36% in Bambu Studio's Shrinkage field, then print a test cube and correct. PLA and PETG values too.
PETG-CF shrinks about 0.3 to 0.6%, against 0.54 to 0.76% for printed plain PETG. The published PLA-CF and ABS-GF figures, and why X and Y can differ.
What voltage do Creality 3D printers use? 100 to 120 V or 200 to 240 V AC in, 24 V DC inside. Ratings, the 115/230 V switch and amps per Ender and K model.
Yes. 3D printed parts shrink as they cool, under 1% in X and Y for PLA, PETG and ABS. After that, only heat, moisture or a constant load changes their size.
Yes. Printed PLA shrinks along its print lines and grows in height once it passes its glass transition, about 55 to 61 °C. Below that it barely moves.
Yes, slightly and reversibly: a 100 mm PLA part loses 0.16 to 0.38 mm going from a 20 °C room to a -18 °C freezer. PETG loses about 0.19 mm.
Does PETG shrink? Yes, by under 1%: 0.54 to 0.76% in X and Y and 0.73% in Z in a printed-part study, close to PLA. Plus the value to enter in each slicer.
Printed PLA shrinks about 0.5% in X and Y and 0.8% in Z. The figures by axis, the molded resin value, and what to enter in OrcaSlicer, Bambu Studio and Prusa.
Yes, 3D printed resin shrinks as it cures: 3 to 6% by volume on maker data sheets, and about 0.3 to 0.6% in X and Y on measured printed parts.
Stepper driver input voltage: A4988 8 to 35 V, DRV8825 8.2 to 45 V, TMC2209 5.5 to 29 V. Why you keep margin, and which drivers run on 24 V or 48 V.
A NEMA 17 stepper is rated about 3 V, which is just rated current times coil resistance. Printers run them on 12 or 24 V through current-limiting drivers.
What voltage should a 3D printer be? In the US, 120 V AC; many printers take 100 to 240 V with nothing to set. How to read the label, plus the 24 V DC inside.
Build a 3D print cost spreadsheet in Excel or Google Sheets: a settings block, one row per job, formulas to paste and a CSV template you can import.
An articulated 3D printed dragon costs about $0.84 to $2.32 in PLA and power at 27 to 55 cm long. Grams, hours and cost by size, plus how to price one to sell.
What a 3D printed figure or toy costs at home: grams, print hours, filament and electricity for figures from 10 to 60 cm, action figures and fidget toys.
A wearable 3D printed helmet costs about $8 to $33 in PLA and power, a mask $2.50 to $10, and a full suit of armor $200 or more, from real model profiles.
How much to charge for 3D printed keychains: what one costs to make, a pricing formula, and what you keep at $4, $6 and $8 after Etsy or Square fees.
A 3D-printed LEGO-compatible 2x4 brick costs about 7 cents in PLA and power, against 21 cents on LEGO's US Pick a Brick. Per brick, per gram and per set.
A 28 to 32 mm miniature costs 10 to 26 cents in resin or PLA. Resin per ml and PLA per gram for real minis, a Warhammer army budget, and what to charge.
What a 3D printed vase costs at home: grams, hours, filament and electricity for vase-mode vases from 13 to 30 cm, solid-wall vases, and what to charge for one.
Can you run a 3D printer on an extension cord? Yes, on a grounded cord rated above the printer's peak amps. Gauge limits, power strip rules and what to avoid.
3D printer power consumption compared: rated maximum watts, measured PLA averages and cost per hour for Bambu Lab, Prusa, Creality, Elegoo and more.
US libraries charge 6 to 20 cents per gram or $1 per hour for 3D printing, and some print free. Fees at eight libraries and a 20 g and 50 g print priced.
What 3D printing services charge for a plastic part: online FDM from $1.00, $25 minimum orders, about $95 at Protolabs, and 15 cents a gram at libraries.
Bambu Lab A1 mini 3D printer power consumption: 80 W average on PLA, 150 W maximum, 6 to 7 W standby, with kWh, cost per hour and amps at 120 V.
Bambu Lab A1 3D printer power consumption: 95 W average on PLA, 350 W maximum at 110 V, 4 to 5 W standby, with kWh and cost per hour at US rates.
Bambu Lab P1S 3D printer power consumption: 105 W average on PLA, 140 W on ABS, 350 W maximum at 110 V, 6 W standby, with kWh and cost per print.
Bambu Lab X1C 3D printer power consumption: 105 W average on PLA, 150 W on ABS, 350 W maximum at 110 V, about 9 W standby, with kWh and cost per print.
Creality K1C 3D printer power consumption: about 144 W averaged over a PLA print, 150 to 250 W spot readings, 350 W rated, with kWh, cost and amps.
Do all 3D printers poop? No. Which printers eject purge through a chute, why they do it even in one color, and how many grams each purge wastes.
Ender 3 3D printer power consumption: 80 to 125 W measured on PLA, 270 W or 350 W rated, a 220 or 270 W heated bed, with kWh and cost per print.
What flushing volume should you use? Bambu Studio and OrcaSlicer values by color pair, black to white and white to black, in mm³ and grams of PLA.
The flushing volume multiplier scales every flush in the slicer's table. Defaults, the 0 to 3 range, grams and dollars saved at 0.8 or 0.7, and how to test it.
3D printer hotend wattage explained: stock heaters are 40 W to 48 W, high-flow ones 50 W to 100 W. Resistance, amps, and what more watts change.
How many amps does a 3D printer use? About 1 to 3 A at 120 V: 0.7 to 1.7 A while printing, up to 2.9 A at a 350 W peak, plus the outlet and circuit it needs.
Is 3D printing expensive? Running a hobby printer costs about $20 to $24 a month for filament, power and wear parts. The printer and the extras cost more.
The multi-color 3D printer with least waste is a tool changer. Waste per color change for switchers, dual nozzles, tool changers and IDEX, worked through.
The flushing volume from PLA to PETG and back: Bambu Studio's measured 650 mm³, why color-based tables run low, grams per change and how to raise it.
How to reduce 3D printing cost, lever by lever: infill, walls, layer height, nozzle size, bulk filament, failures and purge, each with a measured saving.
Running a 3D printer on solar: the inverter size, the battery Wh for a print, and the panel watts to recharge it, with worked examples for an A1 mini and a P1S.
A small 3D print costs 10 cents to $1 at home in PLA and power. Real model weights and print times, service and library minimums, and how to price small prints.
Size a 3D printer uninterruptible power supply by watts, not VA, and work out how many minutes its battery holds a print, with Bambu Lab examples.
How to add a 240V outlet for a 3D printer: panel capacity, breaker and wire size, NEMA 6 receptacles, the 80% load rule and when 240 V beats 120 V.
AC vs DC heated beds explained with the math: current and resistance at 12, 24, 120 and 230 V, heat-up time, PSU sizing, SSRs and where the losses really are.
Calibrate dimensional accuracy per material: fix e-steps and flow, print a test part, measure it, and turn the errors into XY, Z and hole compensation values.
Print dimensionally accurate nylon parts: dry the filament, control chamber and cooling, then compensate for print shrinkage and moisture swelling.
Where multi-color filament waste comes from, a worked cost and time example, the cheaper alternatives, and how to slice and paint a model to cut color changes.
Is AI print failure detection worth it? What camera and lidar monitoring catch, what they miss, 2026 prices, and a break-even formula with worked examples.
How to reduce print failure rate with numbers: log every failure, price each failure mode, fix the costliest first and check each upgrade's payback in prints.