Intro
A circular saw cuts straight, a handsaw cuts slow, but neither can follow a curve — and much of what we build involves curves, from arched doorways and curved worktops to sink cutouts and decorative scrollwork. A jigsaw fills this gap in the toolkit. With a narrow reciprocating blade that moves up and down at high speed, it can trace complex shapes, make plunge cuts into the middle of a panel, and handle materials ranging from softwood and plywood to steel, aluminium, and plastic. The best jigsaws give you control over the cutting action — a pendulum setting that increases aggressiveness for fast straight cuts, a variable speed trigger for delicate curves, and a tool-free blade change so you can switch from a wood blade to a metal blade in seconds. Whether you are cutting a kitchen worktop to length, shaping a custom shelf bracket, or making a template for repeated parts, a good jigsaw turns your pencil line into a clean, accurate cut — and a cordless one lets you take that capability anywhere, from the workshop to the garden to the loft.
Generalities
Bosch invented the jigsaw in 1947, so the brand has a deeper heritage in this category than any other manufacturer. The UniversalSaw 18V-100 is their cordless jigsaw in the green DIY range — an 18-volt tool designed for home users who need to cut wood up to 100 mm thick, steel up to 8 mm, and aluminium up to 18 mm. It runs on Bosch's 18V Power for All battery system and is sold as a bare tool, meaning you supply your own battery and charger. Key considerations when choosing a jigsaw include the cutting capacity, the pendulum settings for different materials, the ease of blade changes, and the quality of the cut line guidance.
This review examines the Bosch UniversalSaw 18V-100 across real-world cutting tasks: straight cuts and curved cuts in plywood and softwood, metal cutting, the effectiveness of the pendulum system, the SDS blade change mechanism, dust and splinter management, and how the included 15-blade set and accessories add value to the package.
Description
The Bosch UniversalSaw 18V-100 is an 18-volt cordless jigsaw with a variable-speed motor delivering 0 to 2,600 strokes per minute, controlled by a pressure-sensitive trigger. It offers a cutting capacity of 100 mm in wood — deep enough for most construction timber, kitchen worktops, and laminated panels — plus 8 mm in steel and 18 mm in aluminium. The four-position pendulum system allows you to adjust the blade's orbital action: no pendulum for clean, splinter-free cuts in delicate materials, through to maximum pendulum for aggressive, fast cuts in rough timber. The soft-start feature ramps the blade speed up smoothly, preventing the tool from jerking at the beginning of a cut.
Bosch has equipped the UniversalSaw with several practical design features. The SDS (Special Direct System) keyless blade change lets you eject and insert blades with a single lever — no tools, no fiddling with hex keys, just push the lever and swap. The Cut Control system is a transparent guide that slides forward to show exactly where the blade will cut, helping you follow a pencil line accurately. A shatter shield and protective cover guard against flying chips and splinters, while the anti-splinter pad on the base plate minimises tear-out on the top surface of the workpiece — particularly important when cutting laminated panels or veneered boards where a splintered edge would ruin the visible face.
At 1.6 kg without a battery, the UniversalSaw is light enough for comfortable one-handed operation along cut lines, though most users will naturally use two hands for precise curved cuts. The variable-speed trigger gives you fine control — squeeze gently for a slow start on delicate materials, pull fully for maximum speed on straight timber cuts. The base plate can be bevelled for angled cuts, extending the jigsaw's versatility to mitre cuts in skirting boards and angled profiles. The body is compact and handles well in tight spaces — between joists, inside cabinets, and along skirting where a circular saw would never fit. Battery runtime with a 2.5 Ah pack is approximately 11 minutes of continuous cutting, which translates to a surprising amount of actual work given that most cuts take only seconds.
The Amazon Edition bundle includes a generous 15-blade mixed set covering wood and metal cutting — an immediate value-add that means you can start cutting different materials straight out of the box without hunting for the right blade. Also included are the protective cover, shatter shield, Cut Control guide, and a protective pad for the base plate. The packaging is cardboard rather than a plastic case, which keeps the price down and reduces waste — though it means you will need your own storage solution. The jigsaw is compatible with all Bosch 18V Power for All batteries, so existing Bosch cordless tool owners can share batteries across their drill, sander, and other tools.
The UniversalSaw 18V-100 holds a strong 4.7 out of 5 stars rating from over 560 customer reviews and ranks #21 in the Jig Saws category — impressive social proof for a DIY-focused tool. Manufactured in Hungary and backed by Bosch's 24-month warranty, it benefits from the brand's extensive spare parts and service network. At around €62 for the bare tool, it is competitively priced for a cordless jigsaw from a premium brand — though remember you will need an 18V Bosch battery and charger if you do not already own them. For home DIYers already on the Bosch 18V platform, it is an easy addition to the toolkit; for those starting fresh, a kit version with battery and charger may offer better overall value.
Pros and cons
Pros
- 15-blade mixed set included — covers wood and metal cutting straight out of the box, a genuine value-add that saves you buying blades separately.
- SDS keyless blade change — eject and insert blades with a single lever in seconds, no tools or hex keys needed.
- 100 mm cutting depth in wood — handles construction timber, kitchen worktops, and laminated panels without struggling.
- Four-position pendulum system — adjust the cutting action from clean, splinter-free cuts to aggressive fast cutting depending on the material.
- Part of the Bosch 18V Power for All system — batteries are shared with drills, sanders, trimmers, and dozens of other Bosch Home & Garden tools.
- Cut Control guide, shatter shield, and anti-splinter pad included — helps you follow the cut line accurately while keeping the work area clean and splinter-free.
- Lightweight at 1.6 kg and compact — easy to handle one-handed on curved cuts and in tight spaces where larger saws cannot fit.
Cons
- Bare tool — no battery or charger included, so first-time Bosch buyers face additional cost to get up and running.
- Battery runtime is modest — approximately 11 minutes of continuous cutting with a 2.5 Ah pack, though this translates to many individual cuts in practice.
- Cardboard packaging instead of a case — keeps the price down but provides no long-term storage or transport solution for the tool and blades.
- No LED work light — unlike some competing jigsaws, there is no built-in illumination for the cut line, which can make precision work harder in dim conditions.
- No variable orbit beyond the 4 preset positions — professional jigsaws often offer finer pendulum adjustment for optimising cut quality across more material types.
Use cases
The Bosch UniversalSaw 18V-100 is a cordless jigsaw for home DIYers who need to cut wood, metal, and plastic in straight lines and curves — especially those already invested in the Bosch 18V battery platform who want a capable, well-accessorised saw at a competitive bare-tool price.
Kitchen Worktop and Shelving Installation
Cutting a laminate worktop to length, making a sink or hob cutout, or trimming shelves to fit an alcove are classic jigsaw tasks. The UniversalSaw's 100 mm depth capacity handles worktops easily, the anti-splinter pad prevents chipping on the visible laminate surface, and the Cut Control guide helps you follow a straight edge precisely. The cordless design is particularly useful in kitchens where power sockets may be far from the cutting area.
Laminate and Parquet Flooring
Laying flooring means cutting boards to length, notching around door frames, and trimming final rows to width — all tasks where a jigsaw is faster and more manoeuvrable than a circular saw. The variable-speed trigger lets you cut laminate cleanly without chipping the decorative surface, and the compact body fits into the tight spaces where flooring meets walls and thresholds.
Curved and Decorative Woodwork
Cutting arched doorways, curved shelf brackets, scrollwork trim, or custom-shaped garden features requires a tool that follows a pencil line around tight radii. The jigsaw's narrow blade and variable speed make it the right tool for curves — slow down for tight turns, speed up for gentle arcs. The pendulum can be set to zero for the cleanest possible cut on visible decorative pieces.
Metal and Pipe Cutting
Cutting steel brackets, aluminium profiles, or copper pipe during plumbing or metal fabrication projects is straightforward with the right blade. The included metal-cutting blades and the 8 mm steel capacity handle most light metalwork a DIYer encounters. The variable-speed trigger lets you match the cutting speed to the metal thickness for clean, burr-free results.
General Home Renovation and Odd Jobs
From cutting access hatches in floorboards and plasterboard to trimming skirting boards and door frames during a renovation, the jigsaw earns its keep across dozens of small, varied tasks. The cordless design means it is always ready — grab it off the shelf, pop in a battery, and make the cut without running extension leads through a renovation site. The included 15-blade set covers most common materials without needing to stop and shop.