Used DC Magnetron Sputtering Systems: Research & Small-Fab Buyers Guide 2026

Last week, I had a call from a university professor who’d just spent $38K on a used Lesker CMS-18. He’d sputtered his first 40 wafers — all for a new copper oxide project — only to discover that the previous user had left a layer of indium on the target and base plate. The sputtered films were off. Thin. Cracked. The whole batch was trash. He had to throw out $12K of wafers and another $4K on a new target. I’ve seen this before. A lot.

This is why you don’t buy used DC magnetron sputtering systems blind. You don’t let someone else’s contamination problem become your research problem.

Let’s talk about what you’re really buying — and what you’re likely to get — when you look at AJA Orion, Lesker CMS-18, Denton Discovery, and Kurt J Lesker systems in the $15K-$120K range. I’ll keep it real. No fluff. No marketing.

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AJA Orion vs Lesker CMS-18 vs Denton Discovery: What the Price Actually Reflects

AJA Orion (Used Models: 2006–2015, $20K–$55K)

• Good for metals, especially gold and aluminum. Basic magnetron design.
• You get a chamber, base, and a target kit. No load lock unless specified.
• If the power supply is original (400W–2kW range), it may need a diode replacement.
• Price jump to $50K+ often reflects a recent target upgrade or added base-plate cooling.

Lesker CMS-18 (Used Models: 2000–2018, $25K–$70K)

• Lesker does the basics well. Simple, reliable, and modular.
• The CMS-18 can handle 180mm wafers, good for academic and small-fab use.
• The chamber is often made of 304 stainless — which is fine, but not up to 316L standards.
• Price over $60K? You’re probably getting a pre-cleaned system with a full target change.

Denton Discovery (Used Models: 2005–2017, $35K–$90K)

• Heavier build. More robust for oxide films like ITO, AlOx.
• Denton systems often include base-plate heating and a better vacuum interface.
• Used models in the $80K+ range may have been used in production — check the process log.
• The Discovery’s power supply is often a later model, which is a plus.

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The Target History Problem

This is the number one thing you miss if you don’t inspect the target and base plate yourself.

One target = one process history.
If you’re buying a system that still has the original sputter target in place, ask:

• What material was it last sputtered?
• Was it cleaned out before removal?
• Was it used for anything other than what’s on the spec sheet?

Even if the target is clean, the base plate, bell jar, and chamber walls can still trap residues. Especially if the system was used for organics or reactive sputtering (like sputtering oxides).

You can ask the seller to do a 20-minute sputter with no target, just argon, to clean out old film. But don’t trust them. Do it yourself.

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Power Supply Matching

You can’t just hook a 15A magnetron up to any 30A DC power supply. It won’t work. It will arc, and it will melt.

DC power supplies and magnetron geometries are not interchangeable. You have to match the power supply rating to the magnetron impedance.

• AJA Orion: 200W–2kW. Use a 30A–60A DC supply.
• Lesker CMS-18: 200W–1.5kW. Works best with 40A–60A.
• Denton Discovery: 1kW–3kW. Needs a 60A–100A supply.
• Kurt J Lesker (KJL) models: Often 1.2kW–2kW. Use a 50A–80A supply.

Also, check if the system has a match network. Some older models require it to stabilize the arc. If it doesn’t, you may need to retrofit one — or risk unstable sputter conditions.

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Load Lock vs. Single-Chamber: The Productivity Trade-Off

Here’s a truth researchers always miss: a load lock is not a luxury — it’s a multiplier.

If you're running a single-chamber system and loading wafers every 10–15 minutes, you're losing 10–15 minutes of vacuum time. Multiply that over 20 runs, and you’re down a full day.

Used systems like the Lesker CMS-22L or Denton Discovery with load lock can cost $15K–$20K more. But if you’re doing more than 3 runs per day, it pays for itself in 6 months.

If you can't afford it, you can retrofit a load lock later — but it’s often easier to buy one with it.

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5 FAQs from Google

1. "used dc magnetron sputter system for research"
Look for AJA Orion, Lesker CMS-18, or Denton Discovery. Used models are available from $20K. Check the target history and power supply compatibility.

2. "how to test a used sputtering system"
Run a 10-minute argon purge with no target in place. Check for leaks. Measure base pressure. Look for arcing or flickering in the plasma.

3. "what is a good used sputter system for oxides"
Denton Discovery is better than Lesker CMS-18 for oxides. Make sure the system includes a water-cooled base plate and a match network.

4. "used lesker pvd system for sale"
Check KJL or Lesker CMS-18 models. Lesker systems in $25K–$60K range are good for R&D. Above that, you’re likely getting a clean, upgraded system.

5. "used sputter target cleaning procedures"
Use argon sputter cleaning with no target. Or remove the target and clean base plate with isopropyl alcohol and a soft cloth. Do this before installing a new target.

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5 Action Steps to Take Now

1. Ask for full process logs — including previous sputter materials and target changes.
2. Inspect the base plate and chamber walls — look for residues, especially if the system was used for oxides.
3. Check the power supply compatibility — don’t assume a bigger supply is better. Match it to the magnetron.
4. Factor in load lock costs — if you're doing more than 2–3 runs per day, it’s worth it.
5. Don’t let a seller “clean” it for you — do it yourself or don’t buy it at all.

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Related Reading

Used PVD/Sputtering Guide
Used RF Generator Guide