Every 38.1mm (1-1/2 Inch) Dust Port DeWalt Miter Saw and the Right Vacuum Adapter
A 38.1mm dust port is the size on DeWalt's popular miter saws. The number 38.1mm is the same as 1-1/2 inch. The port is round and measures 38.1mm across on the inside and 41.5mm on the outside.
Miter saws throw a lot of dust. The factory dust bag catches some, but not much. Most people want to hook the saw to a shop vac or dust extractor to grab more of it.
A GulpDust PETG adapter fits the 38.1mm saw port on one end and your vac hose on the other. No tape. No clamps. Below is every 38.1mm DeWalt miter saw we track.
Every 38.1mm Dust Port Tool
Tools that use the 38.1mm port. Click any tool for its full specs and the exact adapter that fits it.
The Adapter That Fits a 38.1mm Port
Each adapter grips the 38.1mm tool port on one end and steps it to your shop vac or dust extractor hose on the other end. Friction fit, no clamps. Made in the USA.
38.1mm (1-1/2 Inch) Dust Port Size: The DeWalt Miter Saw Port
The 38.1mm port is round. It measures 38.1mm on the inside and 41.5mm on the outside. That inner number is the same as 1-1/2 inch.
DeWalt uses this port on its big miter saws, like the DWS779 and DWS780 12 inch saws and the DWS713 10 inch saw. The port sits at the rear of the saw, behind the blade.
A GulpDust adapter is printed to match the 38.1mm saw port on one end and your shop vac hose on the other end. That gives you a tight seal so the saw pulls dust straight into the vac instead of all over the floor.
How to Connect a Shop Vac to a DeWalt Miter Saw
First, take off the factory dust bag. Look at the round port behind the blade. Wipe out any dust so the adapter seats clean.
Press the small end of the PETG adapter into the 38.1mm port. It is a friction fit, so it holds with a firm push. Then press your shop vac hose onto the wide end.
Turn the vac on before you cut. Miter saws fling fine dust into the air with each cut. A shop vac at the port grabs much more of it than the bag does.
Best Vacuum Setup for a 12 Inch Miter Saw
A miter saw makes a lot of dust fast. A shop vac with good airflow keeps up better than a small one.
A vac with an auto-start outlet is handy. It turns on when the saw turns on, so you never forget. If you cut a lot, add a cyclone separator so the heavy chips drop into a bucket and your vac filter stays clean longer.
No dust setup catches every bit from a miter saw, since the blade is open. But a vac at the 38.1mm port plus a hood behind the saw makes a big difference.
38.1mm Dust Port FAQ
Which DeWalt miter saws use a 38.1mm dust port?+
The DeWalt DWS779 and DWS780 12 inch sliding miter saws and the DWS713 10 inch miter saw use the 38.1mm port. It measures 38.1mm inside and 41.5mm outside.
Is 38.1mm the same as 1-1/2 inch?+
Yes. 38.1mm is the metric value for 1-1/2 inch. You may see the port listed either way. They are the same size.
Can I connect a shop vac to a DeWalt miter saw?+
Yes, with an adapter. Take off the dust bag, then fit the GulpDust PETG adapter into the 38.1mm port and push your shop vac hose onto the other end. A vac grabs much more dust than the bag.
Do I need clamps or tape for the adapter?+
No. The adapter is a friction fit. You push the small end into the 38.1mm port and it holds. The vac hose end works the same way.
Will a shop vac catch all the dust from a miter saw?+
No setup catches every bit, because the blade is open to the air. But a shop vac at the 38.1mm port grabs far more than the factory bag. Add a hood behind the saw for even better capture.
Can I print a 38.1mm adapter myself?+
Yes. You can buy the printed PETG part shipped from the US, or download the STL file and print it at home. We suggest PETG with 3 walls and 25 percent infill.