HB321V dust collection adapter and shop vac hose guide
Measure to order
Dust port
Round port, friction
Look at the dust port on your WEN HB321V. If it sticks out like a tube, measure the outside. On the HB321V, if it is a hole, measure the inside. Use calipers.
Published size
WEN lists the dust port as 1-7/16 in outer diameter, 1-1/4 in inner diameter. (WEN manual, checked Oct 10, 2026)
Your port can differ. Measure yours and use that number.
Get the adapter for this WEN HB321V.
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
WEN HB321V 7.5-Amp 3 x 21 in. Variable Speed Belt Sander
Specifications
Connect your WEN HB321V to your shop vac
Measure the HB321V 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 WEN HB321V is a 7.5 amp, 3 x 21 in. variable speed belt sander. A belt sander is the dustiest tool in most shops. It strips wood fast, and all that wood turns into fine dust that the little cloth bag cannot keep up with. Hooking a shop vac to the port pulls the dust at the source, so it never reaches your air.
The onboard port takes either the bag or a hose. We print a GulpDust PETG adapter to your port measurement on one end and to your shop vac hose on the other, so the hose holds instead of falling off.
WEN HB321V Specs
| Port shape | Round |
|---|---|
| Connection type | Press on |
| Belt size | 3 in. x 21 in. |
| Motor | 7.5 amp |
WEN HB321V Dust Port: What Connects To It
The onboard dust port on the HB321V takes the included dust bag or a hose. We print the PETG adapter to the size you measure there.
Most shop vac hoses are 1-7/8 in. or 2-1/2 in. Neither one seals on a sander port by itself. That gap is why fine dust leaks out around the hose instead of going into it.
The adapter grips the sander port on one end and your vac hose on the other, so you get a snug fit.
How to Connect a Shop Vac to the WEN HB321V
First, pull the dust bag off and clear any packed dust out of the port, so it fits snug.
Press the tool end of the PETG adapter onto the port. We print it to the size you measure, so a firm push holds it. Press your shop vac hose onto the other end. Turn the vac on before the belt touches wood.
Dust Bag vs. Shop Vac on a Belt Sander
The included bag catches the big chips, but the fine dust blows right through the cloth. Fine dust is the part that hangs in the air and gets into your lungs.
A shop vac pulls far more air than the bag ever traps, so the fine dust goes into the vac instead of into the room. On a sander that removes this much wood, the vac is the upgrade that matters most.
WEN HB321V Dust Collection FAQ
What fits the dust port on the WEN HB321V?+
Our PETG adapter does. One end presses onto the sander port. The other end takes your shop vac hose.
Does the WEN HB321V work with a regular shop vac?+
Yes, with the right adapter. A shop vac hose and a tool port rarely match, so measure both. We print the GulpDust PETG adapter to your port measurement on one end and to your vac hose on the other.
Do other WEN belt sanders use the same adapter?+
Maybe. Port sizes can change between models. Measure the port on your tool and give us that number.
Do I need clamps or tape to attach the adapter?+
Usually not. We print the adapter to the size you measure, so you push it onto the port and it holds. The same goes for the vac hose end. Add a wrap of tape at any joint that sees heavy use.
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.
