Choosing the right TIG welder is a game-changer for anyone serious about high-quality welding. From the ability to handle thin metals with precision to achieving immaculate welds on aluminum, a good TIG welder is an investment in your craft.
Eastwood’s TIG welders are designed to give DIYers and pros alike the tools they need to succeed. This guide breaks down everything you need to know to make a smart purchase.
What to Look For When Buying
There are several features unique to TIG welders that will affect your comfort and capability while working. For instance, the materials you can weld (and how thick), what type of consumables you’ll use, power requirements, and general portability are all factors. And let’s not forget price, always an important element of the buying decision. But before you choose, explore the performance factors below.
Duty Cycle
The duty cycle refers to how long a TIG welder can operate at a given power output before needing to cool down. For example, a 60% duty cycle at 150 amps means the machine can weld for six out of every ten minutes. A higher duty cycle is advantageous for extended welding projects, as it minimizes interruptions, allowing for greater efficiency.
Material Ability
The versatility of a TIG welder is defined by the materials it can handle. TIG welding is ideal for precision work on mild steel, stainless steel, and aluminum, each requiring specific settings to achieve optimal results. Aluminum, for instance, requires AC mode due to its oxide layer, while stainless steel benefits from TIG welding’s clean, controlled arc.
Starting Method
TIG welders feature different starting methods to initiate the arc. High-frequency start generates the arc without physical contact, providing a clean, precise beginning to the weld, which is especially beneficial for thin or delicate materials. Scratch start, on the other hand, requires touching the electrode to the metal, which can be less ideal for precision work.
Consumables
The type of torch a TIG welder uses impacts ease of use and cost-efficiency. Air-cooled torches are suitable for lighter tasks, while water-cooled torches handle higher amperages and prolonged use without overheating. Additionally, torch design affects consumable availability, such as collets and tungsten electrodes. Eastwood’s TIG welders use common WP-17-stytle torches compatible with readily available consumables, making replacements easy and affordable.
AC/DC vs. DC-Only
AC/DC TIG welders offer maximum versatility, allowing you to weld both aluminum (using AC) and ferrous metals like steel and stainless steel (using DC). DC-only TIG welders are ideal for steel and are often more affordable, making them a great choice for hobbyists focused on specific projects.
Pre-Flow and Post-Flow Control
Pre-flow and post-flow control adjust the shielding gas timing, protecting the weld area from contamination. Pre-flow ensures the area is shielded before welding begins, while post-flow continues shielding after the arc stops, preventing oxidation and extending tungsten life.
Digital vs. Analog Controls
Digital controls offer precision and repeatability, allowing users to fine-tune amperage, pulse settings, and other parameters with ease. Analog controls, while less precise, are straightforward and durable, making them suitable for rugged environments.
Inverter Power Technology
Inverter-based TIG welders use advanced electronics to provide smooth, stable arcs while reducing machine size and weight. This technology is energy-efficient and allows for precise arc control, making it ideal for intricate welding tasks. Eastwood’s inverter TIG welders combine portability with performance, giving you professional-grade results in a compact package.
Weight
Portability can be a deciding factor for welders who work in different locations. Lightweight TIG welders are easier to transport, making them perfect for on-site jobs or compact workshops. Eastwood TIG welders strike a balance between performance and portability, allowing you to take your welding capabilities wherever they’re needed.
| Item # |
20566 |
33920 |
61500 |
| Power Requirement |
120V/240V |
120V/240V |
120V/240V |
| Welds Steel |
up to 1/4” |
up to 3/8” |
up to 1/4” |
| Welds Stainless |
up to 1/4” |
up to 3/8” |
up to 1/4” |
| Welds Aluminum |
No |
up to 3/8” |
up to 1/4” |
| AC/DC or DC Only |
DC Only |
AC/DC |
AC/DC |
| Start Type |
Scratch |
High Frequency |
High Frequency |
| Torch Type |
WP-17 |
WP-17 |
WP-17 |
| Foot Pedal |
Yes |
Yes |
Yes |
| Control Panel |
Analog |
Analog |
Digital (LCD) |
| Pre-Flow |
0.5 sec (fixed) |
0.1-1.0 sec (variable) |
0.1-1.0 sec (variable) |
| Post-Flow |
5 sec (fixed) |
2-8 sec (variable) |
0-15 sec (variable) |
| Output Amperage |
10-200A |
10-190A |
10-200A |
| Min Duty Cycle (TIG) |
60% @ 100A (120V) |
20% @ 120A (120V) |
|
| Max Duty Cycle (TIG) |
60% @ 145A (120V) |
100% @ 77A (120V) |
100% @ 54A (120V) |
| Inverter Technology |
Yes |
Yes |
Yes |
| Weight (lbs) |
18.0 |
38.0 |
34.2 |
| Price |