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SKU: 100-045.MTDS

Infinity Tools Master Tapered Dovetail Spline System w/ Router Jigs, Spline Making Sled, 6 Dovetail Bits & 2 Brass Guides

20% off
Sale price $399.90 Regular price$497.80

TEMPORARILY OVERSOLD UNTIL 07/22/2026

Add Classic Details to your Box Projects with this Exclusive System!

The Infinity Tools Dovetail Spline System makes creating beautiful and strong dovetail spline joints fast and accurate. The spline jigs come in two sizes and can be used at the router table or with handheld routers. The unique spline making sled works with almost any table saw to create perfect fitting dovetail splines that lock in place for beautiful gap-free results. See below to choose the package that's right for you.

Our exclusive Tapered Dovetail Spline System is a surefire way to create distinctive-looking boxes in your shop. This system not only creates eye-catching dovetail spline joints, but reinforces the joinery on your projects.

The unique, tapered groove and spline fit together like hand in glove. The anodized, extruded aluminum router jig works with a brass guide bushing to create a tapered dovetail groove in the corners of your box. You can use a handheld router or a router table to rout the grooves.

Our CNC-machined, HDPE table saw sled with replaceable zero-clearance insert automatically creates the proper taper when cutting the dovetail splines to fit the routed grooves in the box. The stop block on the fence ensures repeatable, accurate widths for the splines. The sled works on most right-tilt and left-tilt table saws with ¾”-wide miter slots.

Features Include:

  • Create beautiful, gap-free dovetail spline joints
  • Quality components for long life
  • Anodized aluminum router jigs for routing tapered dovetail grooves
  • Table saw sled cuts perfect-fitting tapered dovetail splines
  • Exclusive dovetail router bits to create unique, eye-catching designs
  • Can be used with your handheld router or at the router table
  • Two router jig sizes for multiple design variations

Whether used in contemporary, or classic furniture, dovetail joinery is a highlight of quality woodworking.

Infinity Tools offers a large selection of dovetail bits designed with negative shear angle to provide ultra smooth cuts, and they’re available in all sizes and for all needs. But one thing that doesn’t change …  is the general shape of the bit. The weakest point of all dovetail router bits is their neck. To get the longest life possible from this type of bit, we recommend pre-plowing the groove before cutting the dovetail slot. 

Pre-plowing is the concept of using a straight bit (sized smaller than the diameter of the neck) to first cut a clearance channel. Start by finding the diameter of the neck of the dovetail bit using a caliper.  

Then you locate an appropriate straight bit slightly under the diameter of the neck of the dovetail bit. Use that straight bit to set up the plowing cut.

You make a first pass with the straight bit to remove much of the waste. Remember don’t run this straight bit too fast. Let the bit cut. 

The dovetail bit is then used to follow through that channel, but the stress on the bit is greatly reduced, leading to better dovetail cuts … and a longer life for your dovetail bits! 

Follow this simple tip and you'll get the best performance from your dovetail router bits. 

Frequently Asked Questions

What is included in the Master Tapered Dovetail Spline System?

The system includes anodized aluminum router jigs in two sizes, a CNC-machined HDPE spline-making sled, 6 dovetail bits, and 2 brass guides. Explore more dovetail joinery tools.

What is a dovetail spline joint?

It is a decorative, reinforcing joint where a tapered dovetail spline locks into a matching groove at a box corner, creating a beautiful gap-free look while strengthening the joinery.

Can I use the router jigs with a handheld router?

Yes. The anodized aluminum router jigs can be used with a handheld router or at the router table to rout the tapered dovetail grooves.

What is the spline-making sled made of?

The sled is CNC-machined from HDPE and features a replaceable zero-clearance insert plus a stop block on the fence for repeatable spline widths.

Will the sled fit my table saw?

The sled works on most right-tilt and left-tilt table saws with 3/4"-wide miter slots, and it automatically creates the proper taper as it cuts the splines.

How many dovetail bits come with the system?

The system includes 6 dovetail router bits for creating unique, eye-catching dovetail spline designs. Browse more joinery router bits.

Why are the splines tapered?

The tapered groove and spline fit together like hand in glove, locking the spline in place for a tight, gap-free joint as it seats.

What do the brass guides do?

The two brass guide bushings ride in the router jig to steer the bit, producing a precise tapered dovetail groove in the corners of your box.

Why does the system come with two jig sizes?

The two router jig sizes let you create multiple design variations, so you can vary the scale and look of the dovetail splines on different projects.

What projects is this system best for?

It is ideal for adding distinctive, reinforced dovetail spline details to boxes and similar projects. Pair it with a router table for added control when routing the grooves.