Bambu P2S vs QIDI Plus4: New P2S or Used Plus4?

May 10, 2026

Bambu Lab P2S and QIDI Plus4 3D printer comparison hero image

Direct answer: buy the Bambu Lab P2S if you are shopping new between these named models. QIDI now says the Plus4 is discontinued, no longer in production, and sold out. Consider a Plus4 only as a condition-verified used or remaining-stock machine when its 305 x 305 x 280 mm envelope or listed 65 °C active chamber heating materially changes the work.

The P2S is the safer current purchase. A used Plus4 can still be the better machine fit when its extra 49 mm on X and Y, 24 mm on Z, or active chamber heat changes accepted work, but price it against its condition, included hardware, parts path, seller support, and return rights. If you want a current new QIDI instead, QIDI identifies the Plus5 as the direct successor; that is a separate current-generation comparison, not evidence that every Plus4 owner should replace a working printer.

Affiliate disclosure: GoodPrints3D may earn a commission from qualifying Amazon purchases. Recommendations are based on buyer and workflow fit; specifications, price, and availability can change.

Fast recommendation

Buy the P2S new when its 256 mm envelope fits and you want a current, supported mainstream enclosed workflow.
Consider a used Plus4 only when larger supported footprints or chamber-led ABS, ASA, nylon, and engineering-material work repeatedly affect success enough to justify legacy-machine risk.
Measure the sliced job with supports, brim, purge space, orientation, and clearances before paying for more capacity.
Match the packages: compare base printer with base printer, or price the exact feeder, hub, drying, spool, purge, bench-space, regional-stock, and warranty requirements for both complete systems.

Quick comparison summary

Decision point	Bambu P2S	QIDI Plus4
Current purchase status	Current P2S product page with an active purchase path	Discontinued, no longer in production, and sold out on the official Plus4 page; evaluate used or remaining stock only
Advertised build volume	256 x 256 x 256 mm	305 x 305 x 280 mm
Nominal X-Y area	65,536 mm²	93,025 mm², about 42% more
Chamber approach	Enclosed; no active chamber-heater claim on the current product page	Enclosed; listed 65°C active chamber heating
Current multicolor package	P2S plus AMS 2 Pro; Bambu lists active filament drying and up to 20-color printing when the required system is configured	Legacy Plus4 or Plus4 Combo plus QIDI Box path; QIDI still documents the system, but its official Plus4 page now marks the printer and combo sold out and directs new buyers to Plus5
Best fit	Mainstream enclosed utility-part work	Larger parts and chamber-led material workflows
Main overbuy risk	Too little one-piece room for a proven larger queue	More machine and footprint than ordinary jobs need

Start with the P2S review or QIDI Plus4 review for the ownership details. If active chamber heating matters but 305 mm capacity does not, compare the P2S with the QIDI Q1 Pro. If you are deciding between Bambu generations rather than current defaults, use the P1S vs Plus4 comparison.

Specification, lifecycle, and package check: current Bambu Lab P2S product page, QIDI Plus4 product page, QIDI Plus5 successor page, and QIDI Box product page, reviewed September 13, 2026. Confirm the exact regional SKU, seller, condition, included hardware, stock, specifications, support, warranty, and return rights before purchase.

What each printer is really for

Bambu Lab P2S

The P2S is for buyers who want one strong enclosed machine that can cover broad everyday work without turning the purchase into a larger-machine commitment. It fits people printing brackets, housings, fixtures, organizers, adapters, utility parts, and small-batch functional work where enclosed convenience and a smooth mainstream ownership path matter more than pushing into a bigger heated-chamber branch.

QIDI Plus4

The QIDI Plus4 is for buyers who already know the machine class matters. It makes more sense when the parts are getting larger, the enclosure-and-chamber story matters more, or the buyer wants a stronger step-up machine for bigger fixtures, larger housings, broader plate use, and a more materials-ambitious workflow.

Where the P2S usually wins

buyers who want the cleaner broad enclosed recommendation
shops and serious home users whose real work stays in the mainstream enclosed desktop lane
buyers who want faster routing into the P2S buyer-fit, worth-it, and engineering-materials pages without needing a larger machine story first
owners whose part mix is mostly everyday functional printing rather than large one-piece parts
buyers who care more about a strong current default than about chasing more machine than they will regularly use

Where the QIDI Plus4 usually wins

buyers who need more room for larger fixtures, housings, panels, trays, or one-piece utility parts
operators who want the larger heated-chamber step-up to be part of the purchase logic, not a side note
buyers already comparing broader engineering-material lanes like the QIDI Plus4 engineering-materials page
shops that have started feeling the limits of the normal premium enclosed desktop size class
buyers who are comfortable paying for a bigger machine because the queue already proves why it matters

The market decision changed: new P2S or used Plus4?

Official status check on September 13, 2026: Bambu's P2S page still exposes an active purchase path. QIDI's Plus4 page now states that the model is discontinued and no longer in production, marks both Plus4 and Plus4 Combo sold out, and names the Plus5 as its direct successor. That makes the named head-to-head a current-new-versus-legacy decision rather than a fair new-printer shelf comparison.

Do not let an old sale price decide. For a used or dealer-held Plus4, verify the serial and exact variant, print hours, hotend and nozzle condition, chamber-heater operation, build plate and bed, motion wear, screen and sensors, QIDI Box hardware, firmware state, replacement-parts path, seller warranty, and return window. Add missing hardware and likely service work before comparing its real acquisition cost with a current P2S.

Buy the current P2S: the jobs fit 256 mm and predictable current purchase support matters more than extra capacity.
Consider the legacy Plus4: a measured queue repeatedly needs 305 mm room or active chamber heat, and the exact unit passes inspection at a risk-adjusted price.
Shop the current QIDI lane: use QIDI's Plus5 successor page and compare its actual 320 x 320 x 300 mm fit, package, support, and ownership costs separately.

The existing Plus4 ownership review, Plus4 material boundary, and P2S buyer-fit guide remain the useful internal checks for the named machines.

Compare the complete multicolor workcell, not the base price

Multicolor is a real branch in this comparison, but neither printer name tells you which feeder package is in the cart. Bambu's current P2S page pairs the printer with AMS 2 Pro, lists active filament drying, and describes systems with up to 20 color slots. QIDI's current Plus4 page lists QIDI Box compatibility and separate Plus4 and Plus4 Combo variants. Its current QIDI Box page lists Plus4 compatibility, simultaneous drying and printing, a 65 °C maximum drying temperature, and expansion to up to 16 colors with additional boxes and accessories sold separately.

Do a matched-package quote. Record the exact printer variant, feeder or dry box, model-specific hub and signal cable, extra accessories, supported spool dimensions, adapter needs, purge handling, bench clearance, delivery region, warranty, and return rights. QIDI also says the QIDI Box is not compatible with cardboard spools without an adapter or adapter ring, so a spool library can change the true setup cost.

Lean P2S: your work fits 256 mm, the integrated Bambu path matters, and AMS 2 Pro drying or multicolor is more valuable than a bigger chamber-led machine.
Lean Plus4: the 305 mm plate or 65 °C active chamber already wins the printer decision, and the exact Plus4-compatible QIDI Box package also fits your spools, region, and workflow.
Do not buy on color count alone: accepted-part throughput still depends on purge, changes, support strategy, material compatibility, drying, intervention, and failure cost.

Keep the printer decision grounded with the P2S review, the Plus4 review, and the exact Plus4 material boundary.

The real decision: safer enclosed default or larger heated-chamber step-up?

This is the center of the comparison.

The P2S is easier to justify when your buying story still sounds simple: you want a strong enclosed printer for broad everyday work, mixed material use, and one machine that is easy to recommend without a long caveat list. That is why the P2S alternatives page and the existing P2S vs P1S comparison matter so much in its cluster.

The Plus4 gets easier to justify when your shortlist stops sounding like a normal enclosed-default conversation and starts sounding like a larger-machine conversation. If your work keeps pressing toward bigger one-piece parts, more layout freedom, or a hotter-material workflow that makes a larger heated-chamber branch feel worthwhile, the Plus4 starts solving a different class of problem.

Engineering materials, enclosure logic, and machine-size reality

Both machines can belong in serious functional-printing conversations, but they get there from different directions.

The P2S is the simpler answer if you want the enclosed default first and the tougher-material conversation second. It is a cleaner fit for readers whose path branches into pages like What Materials Can the Bambu Lab P2S Print? and Is the Bambu Lab P2S Good for Engineering Materials? without needing a bigger machine to justify the purchase.

The Plus4 makes more sense when engineering materials are part of a larger step-up story. Buyers looking at the QIDI Plus4 materials page or QIDI Plus4 worth-it page are often already asking whether the work has outgrown a normal enclosed desktop machine and whether size plus chamber emphasis will pay back in real jobs.

Where size changes the buying math

This is where the Plus4 has the clearest advantage. If you are printing larger panels, roomier jigs, bigger trays, broader fixtures, or utility parts that keep getting split just to fit a smaller bed, the machine-size difference stops being a spec-sheet flex and becomes the reason the bigger printer is worth considering.

The P2S is still the better recommendation when that is not your reality. Many buyers admire larger machines without actually needing them. If your real work still fits the ordinary premium enclosed lane, the P2S is often the cleaner call because it avoids paying for a larger branch that will mostly sit there looking impressive.

What makes each one harder to justify?

Why the P2S can be hard to justify

The P2S gets harder to justify when you keep naming problems that sound like Plus4 problems: larger one-piece parts, recurring bed-limit frustration, or a sense that your enclosed printer should already live in a bigger heated-chamber class.

Why the QIDI Plus4 can be hard to justify

The Plus4 gets harder to justify when your actual need is simply one strong enclosed machine for broad everyday work. If you do not have a real larger-part or hotter-material reason to step up, the bigger machine can become more ambition than benefit.

Which buyer should choose which?

Choose the P2S if...

you want the stronger all-around enclosed recommendation
your work is mostly everyday functional printing, not a larger-format machine story
you want one machine that is easy to recommend across mixed normal use
you value a cleaner mainstream default over chasing a bigger specialized branch

Consider a used or remaining-stock QIDI Plus4 if...

the exact unit passes condition, chamber, hotend, motion, accessory, parts, support, warranty, and return checks
larger one-piece parts or roomier plate use are recurring needs
you want a larger heated-chamber machine on purpose, not by accident
your queue already proves that a normal enclosed desktop lane is starting to feel limiting
you are leaning harder into engineering-material or bigger enclosed workflow intent

Editorial take

For most buyers who simply want one strong enclosed printer, the Bambu Lab P2S is the better recommendation. It is easier to explain, easier to defend, and more likely to cover the real job without forcing a larger-machine story.

The QIDI Plus4 becomes the better recommendation when your work already proves you need the bigger heated-chamber branch. If the queue keeps asking for larger parts, more bed freedom, or a stronger step-up for tougher material work, the Plus4 solves a real problem the P2S is not meant to solve.

Use this filter: if your buying story is mostly about owning a strong enclosed all-arounder, buy the P2S. If your buying story is really about a larger heated-chamber step-up for broader functional work, buy the QIDI Plus4.

Choose the next step by the constraint the comparison exposed

The mainstream enclosed lane already fits: use the P2S buyer-fit check. If the remaining question is whether the current model earns its premium, compare the P2S with the P1S.
Recurring size or chamber-sensitive work is the reason to step up: use the QIDI Plus4 buyer-fit check. If capacity is still the open question, compare the Plus4 with the X-Max 3.
The queue needs accepted parts more than another machine: use the ownership-versus-service checkpoint. For a defined file, material, quantity, tolerance, finish, and delivery target, follow the quote-prep checklist, then ask JC Print Farm whether the work fits its process or request a production quote.

If this page is turning into a real ownership decision, start here

This comparison is better when it gives buyers one current-default Bambu owner path, one serious hotter-material path, and one fit-check tool for fixtures and housings instead of ending as a pure verdict page.

If you are leaning P2S because the cleaner enclosed-default branch already matches the work: the 257 mm Bambu textured PEI plate is the cleaner first buy. It fits the buyer who mostly wants less downtime and less surface-friction on the same 257 mm enclosed-Bambu family rather than a bigger machine jump. The tighter on-site handoff is the 257 mm textured-plate review.

If the QIDI side is winning because hotter, wetter, or more demanding materials are part of the real plan: the Creality Space Pi X4 is the stronger match. It is the better follow-through when the real step-up is material recovery and not just owning a larger heated-chamber box on paper. The tighter on-site handoff is the Creality Space Pi X4 review.

If your real jobs are brackets, housings, and repeat-fit parts where either machine only pays off when the dimensions are honest: the Dasqua digital caliper is the cleaner next move. It is a more honest buy than another speculative accessory because both printer branches justify themselves better when you measure functional parts instead of guessing. The tighter on-site handoff is the Dasqua review.

That keeps the page compact and high-fit: one cleaner enclosed-Bambu spare, one serious material-recovery step for the hotter branch, and one measurement tool for buyers whose real work is judged by fit instead of theory.

Common questions

Can you still buy a new QIDI Plus4 from QIDI?

Not from the current official listing reviewed September 13, 2026. QIDI says the Plus4 is discontinued and no longer in production, marks the Plus4 and Plus4 Combo sold out, and directs shoppers to Plus5. Dealer inventory can differ, so verify whether a listing is genuinely new, who provides the warranty, and what return and replacement-parts support applies.

Should a new buyer compare the P2S with QIDI Plus5 instead?

Yes, if the goal is a current new-printer decision. QIDI lists Plus5 as the direct Plus4 successor. Keep this page for evaluating a specific Plus4 or an existing machine; compare Plus5 separately because its 320 x 320 x 300 mm envelope, package, purchase terms, and ownership case are not interchangeable with Plus4.

Does the base P2S or Plus4 price include the multicolor system?

Do not assume it does. Both current product pages expose package choices, and QIDI separately documents model-specific QIDI Box compatibility. Compare the exact base or combo SKUs in your region, then include every required feeder, box, hub, cable, accessory, spool adapter, drying, shipping, warranty, and return term before deciding which complete workcell costs less.

How much larger is the QIDI Plus4 than the Bambu P2S?

The Plus4 advertises 305 x 305 x 280 mm versus 256 x 256 x 256 mm for the P2S. That adds 49 mm on X and Y and 24 mm on Z, or about 42% more nominal X-Y area. Practical fit still depends on supports, brim, purge space, orientation, and clearances.

Does active chamber heating matter in this comparison?

It matters when repeated ABS, ASA, nylon, or other temperature-sensitive work is a real part of the queue. QIDI lists 65°C active chamber heating for the Plus4. For ordinary PLA and PETG jobs that already fit the P2S, the Plus4 advantage may not justify the larger ownership lane.

Which one should most buyers choose?

If buying new between these named models, choose the P2S because QIDI has discontinued the Plus4. A condition-verified used Plus4 can still win when measurements or recurring chamber-sensitive work prove that its extra room and thermal control outweigh legacy-machine risk.

Is the Bambu Lab P2S better than the QIDI Plus4?

Not across the board. The P2S is better for buyers who want the cleaner enclosed default. The Plus4 is better when larger parts, more machine room, or a stronger heated-chamber step-up are central to the purchase.

Which one is better for engineering materials?

The P2S is the simpler buy if you mainly want a strong enclosed machine that can cover a lot of normal functional work. The Plus4 makes more sense when tougher-material plans are part of a broader larger-machine workflow instead of a side curiosity.

Should a small shop buy the P2S or the QIDI Plus4?

Most small shops should first ask whether they truly need the bigger machine class. If not, the P2S is usually the cleaner and more focused buy. If larger fixtures, housings, or hotter-material parts are already pushing the queue upward, the Plus4 has the stronger case.

What if I mostly need finished parts rather than another machine decision?

That is the point to compare the cost and control of ownership with qualified outside production. Use the decision router above once the file, material, quantity, tolerance, finish, and delivery target are concrete enough to evaluate.

Move from this article into the next useful decision.

Use the main hubs to troubleshoot visible defects, compare materials, tighten print settings, check relevant reviews, or figure out whether the work should be quoted or produced professionally.