Jigsaws are tricky for dust collection. Unlike a circular saw where the blade throws chips backward, a jigsaw's blade moves up and down. The cut zone is open at the front. Dust blows forward, upward, and sideways all at once.
A dust port on a jigsaw does not capture everything. But it captures most of it. The difference between using a shop vac hookup and not using one is significant.
Where the Dust Port Is on a Jigsaw
Most jigsaws have a small round port at the rear of the tool body, near the blade clamp. The size changes between brands and between models, so measure the one on your saw. The port size pages are a starting point if you want to compare.
Some jigsaws also have a front blower nozzle that blows dust away from the cut line so you can see the line. This blower does not connect to a vac. It is separate from the dust extraction port.
Measure Your Jigsaw Port
Do not trust a chart. Tool makers change port sizes between models, and sometimes within one line. Measure across the inside of the port opening with calipers or a ruler. If the port is a stub, measure across the outside. Then measure the end of your hose. Give us the two numbers and we print the adapter to them. The size guide shows how, and Build My Adapter takes it from there.
What Shop Vac to Use with a Jigsaw
A shop vac with decent suction works. You need an adapter that goes from the jigsaw's port to your vac hose. A jigsaw port is usually smaller than a shop vac hose, so the adapter steps down.
If you run a cordless system, a small cordless vac is ideal. Measure its hose end the same way you measure a shop vac hose, since a cordless vac may use a smaller hose.
If you own an extractor with its own hose system, measure the end of that hose. The adapter is printed to your two numbers.
Tips for Better Jigsaw Dust Capture
Keep the base plate tight against the workpiece. Gaps under the base let dust escape before the port can catch it.
Use a steady cutting speed. Racing through the cut throws more chips. A controlled feed rate keeps dust in the port zone.
For dusty cuts in MDF or plywood, wear a respirator even with a shop vac. A jigsaw port captures 60 to 70 percent of total dust, not 100 percent.
If your jigsaw has a blower nozzle, turn it off or minimize it. The blower pushes dust away from the cut line, which helps you see the line, but it also blows dust away from the extraction port.
Corded vs. Cordless Jigsaws for Dust Collection
Do not assume a corded jigsaw and a cordless one from the same maker share a port. Measure each saw. A part printed for one saw may not suit another. If you want to compare, the port size pages show what we print at each size.
Installing the Adapter
Push the adapter into the jigsaw port. It should be snug but not require force. Then push your shop vac hose into the other end of the adapter.
With the vac running, make a short test cut. Hold your hand near the cut line. You should feel almost no airflow escaping from the cut zone. If you feel strong airflow, the connection is leaking.
Give us the size you measured at the tool and the size you measured at the hose in Build My Adapter, and we print the part between them.
