SKU: TSS-100IP

Infinity Tools Z.C.I. For Tapered Spline Sled, TSS-100

Name: Infinity Tools Z.C.I. For Tapered Spline Sled, TSS-100
Brand: Infinity Cutting Tools
SKU: TSS-100IP
Price: 14.90 USD
Availability: InStock

$14.90

Description Reviews Q&A Blog

This replacement, zero-clearance insert (ZCI) for our Tapered Spline Sled, (TSS-100) will keep your cuts clean and tear-out free. Sold individually.

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 sled does this insert fit?

It is made specifically for the Infinity Tools Tapered Spline Sled (TSS-100). See more shop essentials.

What does a zero-clearance insert do?

A zero-clearance insert closes the gap around the blade so the workpiece fibers are supported during the cut, keeping your cuts clean and tear-out free.

How is this insert sold?

It is sold individually, so you can buy exactly the number of replacements you need.

Why would I need a replacement insert?

The slot in a zero-clearance insert widens with use, which can reduce its tear-out protection. Keeping a fresh replacement on hand lets you maintain clean cuts. Browse shop maintenance supplies.

Will this insert reduce tear-out on my spline cuts?

Yes. By eliminating the gap around the blade, the insert backs up the wood fibers and keeps your spline cuts clean and tear-out free.

Is this a complete sled or just the insert?

This is just the replacement zero-clearance insert (ZCI) for the TSS-100 sled, not the complete sled.

What does Z.C.I. stand for?

Z.C.I. stands for zero-clearance insert, a plate whose blade slot matches the cut exactly to prevent chip-out.

Who makes this insert?

It is made by Infinity Cutting Tools as a dedicated accessory for their Tapered Spline Sled (TSS-100).

Should I keep a spare on hand?

Yes. Because the insert wears over time, keeping a spare lets you swap in a fresh one and keep cutting clean splines without interruption. See our woodshop basics.

How does the insert keep cuts clean?

The insert's slot exactly matches the blade's path, leaving no gap on either side so the fibers are supported as they're cut, producing crisp, splinter-free edges.

Infinity Tools Z.C.I. For Tapered Spline Sled, TSS-100