Plate joiners (also called biscuit joiners) cut slots in wood for biscuit connectors. Each plunge cut generates a burst of fine wood chips. Connecting a shop vac makes the process much cleaner.
Plate Joiner Port Sizes
Unlike most portable power tools, plate joiners usually have larger ports, close to the 1-7/8 inch shop vac standard. This is because the tool was designed with dust collection in mind from the start.
| Brand / Model | Port OD | Notes |
|---|---|---|
| DeWalt DWS682K | ~47.6mm (1-7/8") | Corded, standard port |
| Porter-Cable 557 | ~47.6mm (1-7/8") | Corded, standard port |
| Festool DF 500 Q (Domino) | 27mm | Festool CT system, plug-it |
| Lamello Classic X | ~35mm | European standard |
| Ryobi AC06023 | ~35mm | Budget plate joiner |
DeWalt and Porter-Cable Plate Joiners: Direct Hose Connection
DeWalt and Porter-Cable plate joiners have ports that are very close to the standard 1-7/8 inch shop vac hose size. In many cases, the shop vac hose cuff fits directly over the port without any adapter.
If the hose cuff is slightly loose or slightly tight, a 47.6mm to 47.6mm coupler seals the connection. If your shop vac uses a 2-1/2 inch hose, you need a 47.6mm to 63.5mm step-up adapter.
Festool Domino Joiner: CT System Connection
The Festool DF 500 Q Domino is the premium plate joiner. It uses Festool's 27mm Plug-it hose system. If you own a Festool CT extractor, the Domino connects directly. If you use a standard shop vac, you need a 27mm to 47.6mm adapter.
The Domino produces less dust than a traditional plate joiner because the Domino cutter leaves a cleaner slot with fewer flying chips. But connecting a vac is still worth doing for indoor work.
Setting Up for Plate Joiner Use
- Connect the vac hose to the plate joiner port (direct hose connection or with adapter as needed).
- Turn on the shop vac before the first plunge.
- Make plunge cuts as normal. The vac pulls chips out of the slot as you cut.
- Check the slot for residual chips after each plunge. A light blow with a puff of air clears any remaining chips before glue-up.
Plate joiner use generates short, concentrated bursts of dust with each plunge. The vac runs for a few seconds per cut. Total session dust is usually low compared to other tools.