What changes when the router hangs under the top
The router is bolted to a mounting plate set flush in the top, with the bit rising through an insert ring. The work slides along a fence or, for curved parts, against the bit's bearing. Freud tells users of its large bits to use a table and fence wherever possible, and says its bits over 1-1/2 in diameter must only be used with the router mounted in one.
Upside down, the bit still turns the same way as in the hand, but seen from above the top it now turns counterclockwise. So the feed reverses too: Bosch says to feed the work from right to left across the front of the bit, against its rotation. The handheld rules are in using a router; both are drawn in setting up the table.
The parts
| Part | What it does | What Bosch's RA1181 manual says |
|---|---|---|
| Top and mounting plate | Carries the router; the plate sits flush with the top | Level the plate flush with its adjustment screws |
| Insert rings | Close the gap around the bit | At least 1/16 in larger than the bit on each side; never enlarge or alter the hole |
| Fence and faces | Guide straight work past the bit | Two facings; jointing shims for the outfeed side; never place stock between bit and fence |
| Overhead guard | Covers the bit above the work | Use it unless an operation requires otherwise, and refit it at once |
| Featherboards | Hold stock against the fence and table | Not meant to hold the work on their own; keep holding it against the fence |
| Starter pin and its guard | A fulcrum for curved work off the fence | Only with piloted (bearing) bits, with the pin guard; feed right to left |
| Dust port | Connects extraction behind the fence opening | The product page: 2-1/2 in hoses fit directly; adapter for 35 mm hoses |
| Switch | Starts and stops the router from the front | Lockout key; the router's own switch locked on |
One maker's table. Other tables have other parts — a lift, a cast top, a different fence — and their own manuals.
For scale, Bosch publishes the RA1181 as a 27 × 18 in top with fence and throat openings of 3-5/8 in, a 15 A switch and a weight of 30 lb. It does not accept template guides. Choosing among benchtop tables is covered in choosing a benchtop table.
Equipment notePaid link
Benchtop router table
Bosch RA1181
The benchtop table this section describes: Bosch gives the RA1181 a 27 × 18 in top, 3-5/8 in fence and throat openings and a weight of 30 lb.
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Which routers may be mounted
Two makers have to agree: the table's, which lists the routers its plate fits, and the router's, which says whether the router may be table-mounted at all. Bosch's 1617 manual allows the router in a table in its fixed base, warns that its RA1166 plunge base is not recommended there because damage may occur, and says its D-handle base will not fit most tables. The RA1181 lists the 1617 in its fixed base only, and several other makers' routers likewise. DEWALT says its DCW600 compact router is not to be used in a router table at all; Milwaukee says never to put its 2723's plunge base in one and to operate that router only when it is held. If either manual says no, the answer is no. That pairing is one of the checks in choosing a router table, along with the kind of table.
Lifts and changing height from above
Changing bit height from beneath the top is awkward, so makers offer ways to do it from above. Bosch's 1617 fixed base adjusts in a table with a 1/8 in hex wrench, and its RA1165 undertable base stays bolted to the plate so the motor can move between bases. A router lift is a separate carriage that raises and lowers the router from above the table; this page reviewed no lift maker's documents, so it gives no lift specifications. Mount and match a lift only as its maker says. Building your own is discussed in table projects.
Feed, featherboards and the starter pin
- Against the rotation. Right to left across the front of the bit. Bosch's RA1181 manual forbids back-feeding, which is a climb cut.
- Never trap the stock. Work placed between the bit and the fence leaves the bit exposed and turns the feed into a climb cut — Bosch's 'fence trap'.
- Never reach past the bit. Bosch says never to hold the work on the outfeed side of the bit.
- Featherboards help; they do not hold. Bosch says they are not meant to hold the work alone. Use push sticks near the bit, and support long or wide work on the infeed and outfeed sides.
- Curves off the fence. Only with a bit that has a pilot bearing, against the starter pin with its guard, entering slowly and keeping the work on the bearing. Bosch warns against routing very small pieces.
- Warped stock goes concave side down on the table and against the fence, as Bosch's manual says.
Safety— The guard stays on
Bosch's manual says to use the overhead guard unless a particular cutting operation requires otherwise, and to put it back immediately after. A guard is not removed to see the cut better or to make a setup quicker.
Dust
The RA1181 collects through a port behind the fence opening. Milwaukee's manual says dust collection can reduce dust-related hazards — reduce, not remove — and calls for respiratory protection or OSHA-compliant extraction in dusty work. Keep extraction running for the whole cut and wear protection as well.
When a shaper is the better machine
A shaper is a dedicated machine with a heavier spindle, slower speeds and cutters that mount on the spindle. It is compared with table-mounted routing in the shaper. Bits for either kind of routing are in router bits and their speeds in the speed chart. The family as a whole is in the router guide.
Before mounting a router under a table
- The router's own manual allows table use, in this base
- The table's maker lists the router and the plate fits it
- Plate level and flush; the smallest insert ring the bit clears by 1/16 in a side
- Guard, fence and featherboards on; push sticks within reach
- Bit speed rating checked against the router's setting
- Extraction connected; the switch and lockout tested
Sources
Bosch's RA1181 manual is the reference for the parts and rules because it is one maker's complete set for one table; other tables differ, and their own manuals govern. No router lift maker's documents were reviewed, so lifts are described only in outline.
- 1.
RA1181 Benchtop Router Table Operating/Safety Instructions. Bosch, 2010.
Used for: Parts of a benchtop table; the overhead guard used unless an operation requires otherwise, and replaced immediately; insert rings at least 1/16 in larger than the bit on each side and never altered; feed against the bit's counterclockwise rotation, no back-feeding, never between bit and fence, never holding stock on the outfeed side; featherboards not to hold stock on their own; the starter pin only with piloted bits and its guard.
- 2.
RA1181 Benchtop Router Table. Bosch.
Used for: The RA1181's published figures: 27 × 18 in top, 3-5/8 in maximum fence and throat openings, 15 A switch, 30 lb; the routers it lists, several in fixed bases only; 2-1/2 in hoses fitting the port directly; no template guides accepted.
- 3.
1617, 1617EVS, 1617EVSPK, 1618EVS Operating/Safety Instructions. Bosch, 2018.
Used for: The 1617 usable in a table in its fixed base; its RA1166 plunge base not recommended there, as damage may occur; the RA1162 D-handle base not fitting most tables; the RA1165 undertable base and above-table adjustment with a hex wrench; feeding right to left across the front of the bit.
- 4.
DCW600 20V Max* Compact Router, Instruction Manual. DEWALT, 2022.
Used for: The DCW600 compact router: 'Not recommended for use in a router table' and 'Do not use in a router table'.
- 5.
M18 FUEL Compact Router, Cat. No. 2723-20, Operator's Manual. Milwaukee Tool.
Used for: The 2723's plunge base never to be used in a table; the router to be operated only when held; dust collection able to reduce dust-related hazards.
- 6.
Premier Adjustable Rail and Stile System (instructions poster). Freud.
Used for: Using a table and fence wherever possible with all guards in place; bits over 1-1/2 in diameter only with the router mounted in a table.
About this guide
Written by BenchRoot Editorial. How BenchRoot sources, checks and corrects its pages is set out in the Editorial Policy. If something here is wrong or unclear, the contact page explains how to tell us.
