How to Choose a Router
Match the collet size and base type to the bits and cuts you actually plan to make before comparing motor wattage or horsepower, since a router with the wrong collet simply cannot run bits you already own. The variable most buyers get wrong is base type: a trim router, a plunge router and a full size fixed base router solve different jobs, and picking based on price or amps alone often leaves you without the plunge or table capability you needed.
Before You Start
List the shank sizes of the bits you own or plan to buy, since 1/4 inch shank bits and 1/2 inch shank bits require different collets. Decide whether your work is mostly edge trimming and laminate work, mostly free hand mortising and hinge recesses, or mostly router table edge profiles, because each points to a different base style. If you already own a router table plate or plan to buy one, check what base bolt pattern and opening diameter it expects.
Step-by-Step Method
- Identify your primary task category first: laminate trimming and small edge work points to a compact trim router like the Bosch Colt PR20EVSK or DEWALT DWP611, free hand plunge cuts and mortises point to a plunge router, and repetitive edge profiling or table use points to a fixed base router.
- Check the collet size the router accepts. Most trim routers only take 1/4 inch shanks, while combo kits like the DEWALT DW618PK or Bosch 1617EVSPK include both 1/4 inch and 1/2 inch collets so they accept larger panel raising and roundover bits.
- Match the variable speed range to your bit diameters. A router with an adjustable low end near 8,000 RPM, such as the Bosch 1617EVS, lets you slow down for large diameter bits, while small trim bits run fine at the higher fixed or near fixed speeds on compact routers.
- Decide if you need a combo kit. A combo kit shares one motor between a plunge base and a fixed base, which covers both free hand and edge profile work without buying two separate motors.
- Check accessory compatibility, including edge guides, template guide bushings, dust collection ports, and whether the base is round and sized to fit a common router table plate, since fixed bases like the PORTER-CABLE 7518 are frequently mounted in tables.
- Weigh the tool in your hands if possible. Palm grip trim routers run roughly 2 to 5 lbs for one handed control, while D-handle plunge routers with larger motors run closer to 12 to 15 lbs and are meant to be held with both hands.
- Confirm the power requirement. Nearly all serious routers are corded, and larger fixed base routers can draw close to a full 15 amp circuit, so check your shop's 120V outlet capacity if you are stepping up from a compact router.
- Compare replacement parts and warranty coverage, since collets, brushes, and base o-rings wear out with regular use and availability varies by brand.
The Mistakes That Cause Most Problems
- Buying a 1/4 inch collet only trim router and later discovering panel raising or large roundover bits require a 1/2 inch shank, which that router physically cannot accept.
- Choosing a router by horsepower number alone, then ending up with a fixed base router for a job that actually needed free hand plunge capability for mortises or hinge recesses.
- Running a large diameter bit at a compact router's full fixed RPM instead of a slower adjustable speed, which causes visible burn marks on the wood and raises kickback risk.
- Buying a fixed base router without checking that its base diameter and mounting holes match an existing or planned router table plate, which blocks table mounting entirely.
- Skipping the dust port check and losing visibility of the cut line during plunge work because chips build up faster than a router without a collection port can clear.
- Using a compact trim router for long, continuous edge profile production runs, which strains a motor that is rated for shorter duty cycles rather than sustained table use.
Important: Always unplug the router before changing bits or adjusting the collet nut, and never run a bit larger than the manufacturer's rated maximum diameter for that router's speed range, since an oversized bit spinning at high RPM increases the chance of kickback or the bit shattering.
How to Know the Job Is Going Correctly
A correctly matched router feeds through the material smoothly with no burn marks or chatter, the bit seats fully in the collet with no wobble when you spin it by hand before plugging in, and the base plate glides flat against the work without catching. On a plunge router, the plunge mechanism drops and locks at your set depth stops without binding, and dust collection is capturing most of the chips instead of blowing them across the workpiece.
After the Job
Unplug the router and let the motor housing cool before storing it, especially after extended table use. Wipe resin and dust off the base plate and out of the collet cone so the next bit seats fully, and check that the depth adjustment or plunge lock still moves smoothly. Store bits by shank size in a labeled case so you can quickly confirm collet compatibility before your next project.
FAQs
How many router models should I actually compare before buying?
Three is usually enough: one compact or trim router, one plunge router, and one fixed base or combo kit, compared on collet size and speed range. Comparing more models rarely changes the decision once those two specs are set.
Are owner reviews on Amazon useful when choosing a router?
Yes, mainly for long-term issues like collet wear, base plate flatness, or brush life that do not show up in a spec sheet. For collet size and speed range, rely on the manufacturer's published specifications rather than reviewer impressions.
Do I need both a 1/4 inch and a 1/2 inch collet?
Most trim and cabinet work only needs 1/4 inch shank bits, but panel raising, large roundover, and door edge bits are often only made with a 1/2 inch shank. A combo kit like the DEWALT DW618PK, which ships with both collets, avoids having to guess ahead of time.
Should I get a corded or a cordless router?
Corded remains the standard for routers because sustained cuts demand steady power. Cordless options like the DEWALT DCW600B compact router exist for buyers already invested in a matching 20V battery platform, but expect shorter runtime and less torque under a heavy cut than a corded motor.
What is the real difference between a plunge base and a fixed base?
A plunge base lets you lower the spinning bit into the workpiece mid-cut, which is what mortises, stopped grooves, and hinge recesses require. A fixed base sets the cutting depth before you start, which gives more stability for edge profiles and is the style typically bolted into a router table.
Does a longer product listing or spec sheet mean a better router?
No. Listing length has no bearing on router quality. What determines fit is whether the collet size matches your bits, whether the base type matches your typical project, and whether the speed range covers the bit diameters you actually use.
Final Check
Before you buy, confirm the collet size matches the shank size of the bits you already own or plan to buy, and confirm the base type, trim, plunge, or fixed, matches the work you do most often. If you are unsure which base you will need more, a combo kit such as the Bosch 1617EVSPK or DEWALT DW618PK covers both plunge and fixed base work from a single motor and is the safer default purchase.