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Prime Day is the one week I tell makers to stock up
I run a resin and FDM shop every single day, so I am not easily impressed by a fake "was/now" sticker. So for this list I did the boring part for you: I checked every single price live and only kept the ones showing a real discount right now. No padding, no fake markdowns. Printers, resin, filament, finishing tools, and even clean-air gear are all genuinely cheaper this week, and I included budget picks alongside the step-up options. Here is what is worth buying.
FDM printers
Bambu Lab P1S
Around $369, down from $399. A fully enclosed, fast CoreXY machine that is multicolor capable with an AMS. This is the one I point new makers to, and it is the best all around FDM printer for most people. Check the live P1S price.
Creality K1C — 16% off
$369, down from $439. A genuinely fast CoreXY with a clog-free direct extruder and a hardened nozzle, so it handles carbon fiber filaments without complaint. Great if you print functional parts. Check the K1C price.
My honest take: my Bambu X1C with the AMS is the workhorse for larger and multicolor prints in my shop. The P1S gives you most of that experience for a lot less.
Resin printers
Elegoo Saturn 4 Ultra 16K — 32% off on Amazon
$441.99, down from $649.99. A real, verified discount on a 10 inch 16K machine with smart tank heating and fast 150mm/h printing. This is the sweet spot for batch printing figures with crisp detail. Check the Saturn 4 Ultra price.
Elegoo is also running its own Kick-off Bonus sale on elegoo.com to go head to head with Prime Day, live now through June 29. Real markdowns across the lineup: the Mars 5 is $195 (down from $243.75), the Mars 5 Ultra is $293 (down from $366.25), the Saturn 3 Ultra is $402 (down from $502.50), and the Neptune 4 FDM is $217 (down from $271.25). My own Saturn 3 Ultra is in that sale, so I can vouch for the machine. Shop the Elegoo sale here.
My honest take: my Saturn 3 Ultra and Jupiter SE earn their keep every week, and my old Phrozen Sonic Mini 8K still runs like a champ years later. Elegoo machines are reliable production printers, not fragile boutique tools.
Filament
SUNLU PLA Matte — 29% off
Around $14.23 a spool, down from $19.99. SUNLU is my house filament: consistent, neatly wound so it does not tangle mid print, and matte hides layer lines beautifully. Buy the colors you use most in bulk while it is this cheap. Check the SUNLU Matte price.
One honesty note on filament "deals": not every spool with a Prime Day badge is actually cheap. I have seen filament listed on "sale" at a price above its normal cost per kilogram. Always check the per kilogram price before you grab a brand just because it has a sticker.
The finishing and maintenance tools I just bought
This is where Prime Day really pays off. The tools that take a print from "homemade" to "professional" are the things you put off buying. This week I stopped putting them off. These are the exact items I added to my own shop, and all of them are verified on sale right now.
HOTO 25-Piece Electric Screwdriver Kit — $28.49, was $39.99
I bought the HOTO 25-piece kit for printer maintenance: swapping FEP sheets on resin machines, teardowns, general repair. It comes with hex bits, exactly what you need for most printer adjustments, and the S2 steel bits actually last.
HOZO NeoSander Detail Sander — $55.99, was $69.99
The HOZO NeoSander is a mini electric pen sander with a reciprocating action built for model finishing. Sanding print lines by hand is the slowest part of finishing, and this cuts that time way down without chewing up fine detail. If you finish a lot of prints, it pays for itself in saved hours.
Makartt Dust Collector — budget pick, the one I use ($28.49, was $46.99)
The Makartt PocketSized dust collector is the one I actually grabbed: $28.49, down from $46.99 (39% off). It is sold for nail techs, but it is perfect for capturing the fine dust from sanding cured resin prints, and at under $30 it is a no brainer. Want more suction for a busier bench? The 60W plug-in version is $51.29 (down from $79.99, 36% off). Either way, keep that dust out of your lungs and pair it with a respirator.
Genuine Bambu Lab AMS Hub: I also grabbed a genuine Bambu Lab AMS Hub on sale to chain multiple AMS units for a bigger multicolor setup. Always go genuine here for firmware compatibility.
Keep your workshop air clean
If you run resin or sand prints, pulling fine dust and fumes out of the air is one of the best health upgrades you can make. Here are a budget pick and a step up, both on sale.
Budget pick: Levoit Core Mini-P — $37.99, was $49.99
A desktop sized air purifier small enough to sit right next to your printer or sanding station. At under $40 it is the easiest first step to cleaner air in a small shop or on a single workbench. Check the Core Mini-P (black).
Step up: Levoit Core 300S-P — $119.99, was $149.99
A record low on the full size HEPA model. More airflow and smart controls for a whole room, so it actually clears the air your fans just push around. This is the one to get if resin printing is your main hobby. Check the Core 300S-P deal.
And do not skip the basics. Grab a respirator rated for organic vapors and a box of nitrile gloves. They are cheap, on sale, and your lungs and skin will thank you. An air purifier plus a respirator is the combo I run for every resin session.
Bonus: design your own models
Printing is only half the fun. If you want to make your own models to print, Tripo 3D is running an anniversary sale with up to 50 percent off annual plans (the Pro plan lands around $13.93 a month). It turns text or images into printable 3D models with AI, which is handy when you want a custom base, accessory, or one-off prop fast. Check the Tripo sale.
This week's quick tip: store your Prime Day resin right
If you stock up on resin, store it sealed, upright, and completely out of sunlight. UV is what cures resin, so light exposure slowly thickens the bottle and ruins prints. A dark cabinet or opaque tote is perfect. Shake each bottle well before pouring so the pigment mixes back in.
What I am making this week
I am batch printing a new run of figure sculpts on the Saturn, which is exactly why I stocked up on resin and finally upgraded my sanding setup. If you want something custom printed and hand finished without buying the gear yourself, that is literally what I do. Come start a commission or browse the shop.
FAQ
Is Prime Day actually a good time to buy 3D printing gear?
Yes, especially for consumables like resin and filament, and for finishing tools that rarely go on sale. Just verify the live price, since some "deals" are only small markdowns. Everything in this post was checked live.
What is the best 3D printer deal this Prime Day?
For resin, the Elegoo Saturn 4 Ultra 16K at 32% off is the standout, and Elegoo's own site sale has cheaper entry options like the Mars 5 at $195. For FDM, the Bambu Lab P1S is the best all around pick.
Do I need an air purifier for 3D printing?
If you print resin or sand prints, yes. Resin gives off VOCs and sanding throws fine dust. A small desktop purifier like the Levoit Core Mini-P starts under $40, and a respirator covers the rest.
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