Prusa Research · Resin · 2021
The SL1S Speed is Prusa's resin printer, and it works a little differently from the hobby machines. Prusa announced it in June 2021 as a faster SL1, with a new mono screen and an LED array four times as powerful. Instead of lifting each layer straight off the film, it tilts the tank after every layer, which takes about three seconds a layer. The tank is a graphite-reinforced composite with ordinary FEP film, and Prusa rates the 5.96 in mono screen at more than 2,000 hours. For a used buyer, the bookkeeping is what sets it apart. The printer records resin used and the exposure time of the LEDs and the screen, so you can see how hard it's been worked before you pay. Prusa publishes guides for replacing the screen and the film.
Printer check
Should come with it
Check the listing photos against these lists, and ask the seller about anything you can’t see. A missing sheet, add-on or power supply should come off the price.
The screen and the FEP film are what wear out, and Prusa documents no SL1S defect beyond that. The screen is rated at more than 2,000 hours, and damaged film can leak resin onto it, so film should be replaced at once.
New to used printers? How to check a used 3D printer covers hours, nozzles, beds, belts and shipping damage, and accounts, firmware and cloud binding covers what the seller should sort out before it ships.
Buying guide
The SL1S logs its LED and display exposure time under Support, System Information, and Prusa rates the screen past 2,000 hours. Ask for that screen before any factory reset, which clears it. All four for sale come with the CW1S, so price tracks the extras, and the $1,382 bundle with two spare tanks sits under the $1,575 to $1,900 band. Ask for it packed with cardboard over the LCD and the tank screwed on.
$1,381.98est. delivered
Two extra resin tanks with the CW1S, for less than any other bundle. Ask for a photo of the FEP film held up to a light, since damaged film can leak resin onto the screen.
Prusa SL1S 3D Printer with CW1S Washing/Curing Machine, 2 Extra Resin Tanks
Delivered prices include shipping as eBay quoted it to a US address on Oct 19, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.
Snapshot
Checked . Some may have sold.
Delivered prices include shipping as eBay quoted it to a US address on Oct 19, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.
Used$1,381.98est. delivered
$1,300.00 + $81.98 shipping
Buy It Now$1,300.00
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
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Good buy
CW1S and two extra resin tanks included.
Seller: mr._manhattan
100% positive
Used$1,645.03est. delivered
$1,550.00 + $95.03 shipping
Buy It Now$1,550.00
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Our take
With the CW1S, at $1,645 delivered.
Seller: aluebke1
100% positive
Used$1,837.92est. delivered
$1,484.34 + $353.58 shipping
Buy It Now$1,484.34
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Our take
Titled Like New, with the CW1S, extra FEP and filters.
Seller: darrent_8399
100% positive
Used$1,999.99delivered
$1,999.99 · free shipping
Buy It Now$1,999.99
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Our take
CW1S, two tanks and extra FEP, titled low hours. Ask for the hours screen.
Seller: scotte399
100% positive
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