Key Features
Overview
The Kreg PRS3400 Precision Router Table Setup Bars are a set of seven aluminum setup gauges for dialing in cutter height, checking groove or rabbet depth, and setting fence distance with less trial and error. This is a router table setup bar set designed for accurate router table, table saw, and shaper setup. Model Number: PRS3400. If you spend time sneaking up on bit height with rulers, scrap cuts, and guesswork, this set is built to speed that up.
Kreg uses an exclusive three-gauge design on each bar, and that is the real value here. The concave step on the bottom lets the bar straddle a router bit or saw blade for precise height adjustment. The step on the top edge works as a gauge to verify the depth of a completed cut. The step on the end lets you set the distance from a table saw blade to the fence, or from a router bit to the fence. In plain terms, one bar helps you set up the cut before you start and confirm the result after the pass.
The seven included sizes cover common setup needs: 1/8 inch, 3/16 inch, 1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, and 1/2 inch. That range makes the set useful for grooves, dado-style cuts, rabbets, fence spacing, and repeatable router bit height changes. For woodworkers who switch between profiles or need to match an existing cut, having fixed gauges is often faster and more consistent than reading a tape or adjusting off a scale.
Material choice matters on a setup accessory like this. Each bar is made from soft aluminum, which helps reduce the chance of damaging your router bit or saw blade if there is incidental contact during setup. That is a smart design choice for a tool that is meant to ride close to sharp cutting edges. You still want to use the bars as setup gauges, not as prying or scraping tools, but the aluminum construction is the right call for protecting more expensive cutters.
The PRS3400 is also built for shop efficiency. The set comes stored in a portable protective case, so the bars stay organized instead of getting scattered in a drawer or knocked around on a bench. For anyone who moves between a router table and a table saw, that matters more than it sounds. When gauges are organized and easy to reach, you actually use them, and your setups stay more consistent.
On compatibility, these setup bars are a natural fit for router table work in general and are specifically listed as compatible with the Kreg Precision Bench Top Router Table PRS2000. They are not limited to one machine, though. The product data also supports use on a table saw and shaper, which makes this more of a general precision setup accessory than a one-tool add-on.
Who should buy this? Woodworkers, cabinet installers, trim carpenters, and serious DIY users who care about repeatable setups will get the most out of it. If you are setting bit height by eye once a year, this may be more tool than you need. But if you regularly tune a router table for joinery, edge profiles, grooves, or precise fence spacing, the Kreg PRS3400 Precision Router Table Setup Bars save time and help cut down on wasted stock.
Set Bit Height Without Guesswork
When the cutter height is off, the whole setup is off. The bottom concave step is made to straddle the bit or blade, so you can set height directly against a known gauge instead of creeping up on it with repeated test cuts.
- Bottom concave step is used for precise router bit or saw blade height adjustment
- Useful on router tables, table saws, and shapers
Check Cut Depth Fast
The top step on each bar doubles as a cut-depth gauge, which makes it easy to confirm your groove or rabbet after a pass. That is a simple feature, but it helps catch setup drift before you run the rest of the material.
- Top edge step acts as a gauge for completed cut depth
- Fixed bar sizes help with repeatable setups across multiple parts
Dial In Fence Positioning
Fence setup is where a lot of small errors turn into bad parts. The end step on each bar gives you a fast reference for setting the distance from fence to cutter, whether you are at the router table or the table saw.
- End step sets blade-to-fence or bit-to-fence distance
- Helps speed up repeat setups and short production runs
What’s in the Box
- (7) Precision setup bars
- (1) Portable protective case
- Included sizes: 1/8 in., 3/16 in., 1/4 in., 5/16 in., 3/8 in., 7/16 in., 1/2 in.
Key Specifications
| Tool Type | Precision router table setup bars |
|---|---|
| Material | Soft aluminum |
| Piece Count | 7 |
| Included Sizes | 1/8 in., 3/16 in., 1/4 in., 5/16 in., 3/8 in., 7/16 in., 1/2 in. |
| Case Included | Yes |
| Made In | United States |
Compatibility
Built For
Pro Tip
Use the bottom step to set the bit height, then make one light test pass and check the groove with the top step on the same bar. That gives you a quick before-and-after check with one gauge instead of switching tools mid-setup.
Tool Nut’s Take
Kreg PRS3400 Precision Router Table Setup Bars are a small shop upgrade that pays off every time you set a cutter
This is the kind of accessory that looks simple until you use it for a week and realize how much setup time it cuts out.
- Who it’s for: Woodworkers and router table users who want repeatable bit height, fence position, and cut depth without fussing with rulers and scrap stock.
- Why it stands out: The three-gauge design makes each bar do more than one job, and the soft aluminum construction is a smart choice around expensive cutters.
- Worth knowing: This is a setup accessory, not a measuring system with infinite adjustment. If your work lands on common fractions, it is fast and dead simple. If you need oddball dimensions, you will still reach for another measuring tool.
Common Questions
- What machines can these setup bars be used with? The product data supports use on a router table, table saw, or shaper.
- What are the bars made from? They are made from soft aluminum to help prevent damage if they make contact with a router bit or saw blade during setup.
- Can these bars be used to set fence distance as well as cutter height? Yes. The end step on each bar is designed to set the distance from a table saw blade to the fence or from a router bit to the fence.
- Are these compatible with a Kreg router table? Yes. They are listed as compatible with the Kreg Precision Bench Top Router Table PRS2000.
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