Milwaukee M18 is a big cordless platform. It covers saws, sanders, routers, and multi-tools. Many of these tools can pull dust into a vacuum. Getting that dust into a shop vac or extractor is the goal.
Tool makers change port sizes between models, and sometimes within one tool line. A hose that grips one tool can wobble on the next. Do not trust a chart. Measure the port on the tool you own.
Measure Your Tool and Your Hose
- Look at the dust port on your tool. Is it an opening, or a stub that sticks out?
- If it is an opening, measure across the inside with calipers or a ruler. If it is a stub, measure across the outside.
- Measure the end of your hose the same way.
- Write both numbers down.
Give us the two numbers and we print the adapter to them. The size guide shows where to place the calipers. You can also see our Milwaukee page. If you want a starting point, the 1-1/4 in. size page shows what we print at that size. Your own measurement is what decides the part.
Why a Hose Rarely Fits Straight Onto a Tool
You can often push a shop vac hose onto a tool port and it looks fine. In practice the fit is rarely snug. The hose end may be too loose or too stiff. The port may be oval. A loose joint pulls in room air instead of dust.
An adapter made to your two measurements grips the tool port on one end and your hose on the other. No tape, no wobble.
Shop Vac Hose Sizes
Shop vacs are usually sold with one of three hose sizes:
- 1-1/4 inch: common on small shop vacs
- 1-7/8 inch: common on mid-size shop vacs
- 2-1/2 inch: common on large shop vacs and central systems
Those are trade names. Measure the real end of your own hose before you order.
Running an M18 Tool on a Dust Extractor
Many serious users run their cordless tools on a Festool or Bosch extractor for better filtration. Extractor hose ends are not the same as shop vac hose ends, and they change from maker to maker. Measure the end of the extractor hose, then measure your tool port. We print the adapter between those two numbers.
Drywall Cut-Out Tools
A drywall cut-out tool is a special case. It uses a shroud that wraps around the bit opening, like a router. The shroud has to attach to the tool before you can connect a hose. Measure the port on the shroud, not on the tool body.
How to Get the Best Capture Rate
Three things affect how well dust collection works on cordless tools:
- Filter quality. Standard shop vac filters blow fine wood dust back out. Use a HEPA filter bag inside your shop vac.
- Hose length. Every extra foot of hose reduces suction. Keep the hose as short as practical. Coiled hose is worse than straight hose of the same length.
- Adapter fit. A loose adapter pulls in ambient air instead of drawing dust from the port. The adapter should friction-fit snugly with no wobble.
Smaller Compact Tools
Compact tools often have smaller ports, and many compact cutting tools have no built-in dust port at all. If your tool does have a port, measure it the same way. Do not assume it matches a bigger tool from the same maker.
Measure your tool and your vacuum hose, then Build My Adapter.
