DHS790 dust collection adapter and shop vac hose guide
Measure to order
Dust port
Round port, friction
Look at the dust port on your DeWalt DHS790. If it sticks out like a tube, measure the outside. On the DHS790, if it is a hole, measure the inside. Use calipers.
Get the adapter for this DeWalt DHS790.
Tell us the size you measured at the port and the size you measured at the hose, and we print both ends to those two numbers.
- Made in the USAPrinted to order
- PETGTougher than PLA
- Push onPrinted to your two sizes
- Print defectPhoto within 30 days, reprint or refund
DeWalt DHS790 FlexVolt 120V MAX 12 in. Double Bevel Sliding Miter Saw
Specifications
Connect your DeWalt DHS790 to your shop vac
Measure the DHS790 port and the hose or duct you want on it. We print the adapter between those two numbers. Made in the USA.
Build an adapter for this toolPopular starting points
Full port and fit detail for this tool
The DeWalt DHS790 is the FlexVolt 12 inch double bevel sliding miter saw. It runs off batteries or off the wall, which is why it ends up on decks, additions and remodels where there is no power yet.
Those are also the worst places to spray sawdust. The saw has a dust port at the rear. We print our PETG adapter to your port measurement on one end and to your shop vac hose on the other end.
DeWalt DHS790 Specs
| Port shape | Round |
|---|---|
| Port location | Rear |
| Connection type | Press on |
| Blade size | 12 in. |
DeWalt DHS790 Dust Port: What Connects To It
The port is at the rear of the saw, where the chip bag clips on. It is round, and we print the adapter to the size you measure there.
A shop vac hose will not seat on it by itself. It wobbles, leaks around the joint, and comes off when the head slides.
The adapter grips the saw port on one end and your hose on the other end. Tell us the hose and we print that end to match it.
Cordless Saw, Cordless Vac, No Outlet
The reason people buy this saw is that it works with no power on site. A corded shop vac puts the cord right back.
A battery vac solves it. Most of them run a smaller hose than a shop vac, and the adapter handles either one. Pick the hose end that matches the vac you own.
Keep the hose short on a battery vac. Every foot of hose costs suction, and a small vac does not have much to spare.
Cutting inside a finished house is where this matters most. The bag lets fine dust into a room somebody has to live in.
How to Connect a Vacuum to the DHS790
Pull the battery, or unplug the saw if you are running it corded. Then take the bag off and clear the port.
Push the saw end of the adapter on. Firm press, done. Then push the vac hose onto the other end.
Start the vac before the blade drops. A miter saw throws everything backward in the first instant of the cut.
Leave slack in the hose. This head slides and bevels both ways, and a tight hose will drag the adapter off the port.
DHS790 and the Corded DeWalt 12 Inch Saws
The DWS716, DWS779, DWS780 and DWS782 are the corded saws in the same size class, and each has its own page.
Read the model plate on the motor housing before you order. These model numbers look alike and the pages are not interchangeable.
The DW718 is the one to know about. Measure that saw's port on its own. If you see a printed kit sold for that saw and this one with the same piece, that is the claim it is making.
DeWalt DHS790 Dust Collection FAQ
Will a GulpDust adapter fit the DeWalt DHS790 dust port?+
Yes. The port sits at the rear of the saw. We print the adapter to the size you measure there, and the other end matches your vac hose.
Can I run the DHS790 on a cordless vacuum?+
Yes. Battery vacs usually run a smaller hose than a shop vac. Tell us which one you have and we print that end to match.
Is a shop vac better than the chip bag?+
Yes. The bag catches big chips and lets fine dust through, and it stops working well once it fills. A vac keeps pulling.
Does the same adapter fit the DWS779 or DWS780?+
Not always. Ports can differ between miter saws, so measure the port on yours. The builder prints the adapter to the number you enter.
Does it fit the DW718?+
No. Ports can differ between saws, so this page does not cover the DW718. If you want a part for it, send us the shape on the custom request form and we will tell you if we can make it.
Do you sell the design file?+
No. We sell the finished part. Each one is printed to order in PETG and ships from the US.
Related Tools, Adapters, and Guides
Related Guides

Drywall Sander With Vacuum Setup: Pole Sander Dust Collection and Hose Connections
Drywall dust is fine, fast, and bad for your lungs. A pole sander, a HEPA shop vac, and a snug hose connection keep more of it out of the air. This guide covers how to pick a setup, how to measure your sander port and hose, and the PETG adapter that joins the two.
9 min read

Concrete Grinder With Vacuum Setup: Dust Collection and Hose Connections
Surface grinding concrete is dirty work. OSHA Table 1 says you need a HEPA vacuum and a shroud. This guide covers hand-held and floor grinders, rental hookups, and how to measure for the PETG adapter that connects your shroud to your shop vac.
8 min read
DeWalt DCV517B vs DCV586B: Which Cordless Vac Should You Get?
DeWalt makes two popular cordless shop vacs. Here is how they compare, and what to measure before you connect your tools.
4 min read
Track Saw Dust Collection: Connect Yours to a Shop Vac or Extractor
Track saws collect dust better than any other circular saw. Port styles change between brands and models, so measure yours. Here is how to connect it.
5 min read
