Jig

Jig 78129 Saw

Saw
3.9 inches
350 watts
Corded electric

4.3/ 5 on Amazon24Amazon ratings100+bought last month2.7ProductDome score

Limited evidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology

Best forYou need a corded jigsaw for occasional curved or straight cuts in wood-thickness material.

A corded 350-watt jigsaw rated to a 100 millimeter cutting capacity, suited to occasional curved cuts rather than continuous production work.

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ProductDome scorecard

How it ranks among the 265 saws we track

2.7/ 5ProductDome scoreLimited evidence

Owner satisfaction · 56% of scorecategory median 4.6★4.4

4.3★ across 24 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 373 ratings1.7

24 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score2.7

100+ bought on Amazon last month.

Data quality · 11% of score3.8

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 265 saws we track - how the scorecard works · full saws data report. Confidence: limited - limited rating history.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

A corded jigsaw running on standard 120-volt power with a 350-watt motor and an alloy steel build, rated to a 100 millimeter cutting capacity.

A 350-watt corded motor sits on the lighter end of the jigsaw range, better suited to boards and sheet stock than long production runs. The listed 100 millimeter capacity lines up with typical lumber thickness rather than heavy timber. Power comes from the wall rather than a battery, so runtime is not a concern but cord reach is.

Power source: corded electric
Voltage: 120 volts
Motor power: 350 watts
Cutting capacity: 100 millimeters

Who it's for

Works for DIYers making curved or straight cuts in wood-thickness stock around the house or shop. Less suited to those needing cordless mobility or continuous heavy-duty cutting.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

Corded power avoids battery runtime limits
Alloy steel build
Rated cutting capacity of 100 millimeters

What to check first

Cord limits reach and mobility
350 watts is a modest motor size

Performance notes

The 350-watt motor on 120-volt power and alloy steel construction are rated for cuts up to 100 millimeters; being corded, power stays constant but the cord limits how far the saw can travel from an outlet.

Specifications

Brand	Jig
Model	78129
Capacity	3.9 inches
Motor Power	350 watts
Power Source	Corded electric
Material	Alloy Steel
Voltage	120 volts

How it compares

This product against the closest alternatives we track in saws.

Product	Amazon rating	Ratings	ProductDome score
Jig 78129 SawThis product	4.3 / 5	24	2.7 / 5
DEWALT DCS334B SawDeWalt	4.8 / 5	9,477	4.7 / 5
SKIL 5280-01 SawSkil	4.7 / 5	14,300	4.6 / 5
Milwaukee 2719-20 SawMILWAUKEE	4.8 / 5	6,485	4.5 / 5
BLACK+DECKER BDEJS600C SawBLACK+DECKER	4.7 / 5	11,123	4.5 / 5

Frequently asked

Questions about the Jig 78129

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

Is this saw corded or cordless?

Corded electric, running on 120 volts.

What is the motor power?

350 watts.

What is the maximum cutting capacity?

100 millimeters, per the listed spec.