Frequently Asked Questions
Common questions about our adapters, materials, and ordering.
What material are GulpDust adapters made from?
All GulpDust adapters are printed in PETG (Polyethylene Terephthalate Glycol). PETG handles heat up to 80°C, resists workshop solvents, and is much tougher than PLA. It will not warp in a hot car or crack from drops. We do not offer PLA versions, PETG is the right material for this job.
How long does shipping take?
Physical adapters ship within 2-3 business days from the USA. We print every order fresh in PETG before shipping. STL downloads are delivered instantly after purchase.
What is the difference between the STL download and the printed adapter?
Both are the same precision PETG geometry. The STL file is a download you print yourself on any FDM printer, PETG filament recommended. The printed adapter is printed for you and shipped ready to use. The STL costs about 40% of the physical price. You provide the filament and print time.
What power tool brands do you have adapters for?
We currently have adapters for Milwaukee, DeWalt, Makita, Festool, Ryobi, Bosch, and more. New tool models are added regularly. Use our configurator to search for your specific tool.
My adapter combination is not in the configurator. Can I request it?
Yes. When you use the configurator and no adapter exists for your tool and vacuum combination, you will see a request form. Enter your email and we will notify you when that adapter is available.
What are the standard dust port sizes?
The four main sizes are: 27mm (Festool CT system), 32-36mm (most cordless tools like Milwaukee M18, DeWalt 20V, Makita LXT), 1-7/8 inch (47.6mm, the most common US shop vac hose), and 2-1/2 inch (63.5mm, large shop vacs and jobsite table saws). There is also a 4-inch standard for central dust collection ducts and cabinet table saws. Our configurator handles all of these automatically.
How tight is the fit?
Our adapters are designed for a friction fit, snug enough to hold without tape but removable without tools. The exact geometry is based on measured dimensions for each tool model. If your adapter does not fit, contact info@gulpdust.com and we will make it right.
Do the adapters work with Festool dust extractors?
Yes. We have adapters for Festool CT Mini, CT Midi, CT 26, CT 36, and CT 48 extractors. Festool uses a 27mm hose system. Our configurator matches Festool ports correctly.
Can I use a GulpDust adapter with a standard shop vac?
Yes. Most standard US shop vacs use 1-7/8 inch (47.6mm) hoses. Large shop vacs (16 gallon and up) often use 2-1/2 inch hoses. Our adapters step up from your tool's port size to whatever hose size your vac uses. The configurator asks about your vac, not just your tool, so the adapter covers both ends.
What is a cyclone separator and do I need one?
A cyclone separator sits between your tool and your shop vac. It spins debris in a circle so 90-99% of dust falls into a bucket before it ever reaches your shop vac filter. This keeps filters from clogging and suction strong. If your filter clogs quickly, a separator is worth adding. See our guide on cyclone separators for sizing and setup.
What is Patreon membership?
GulpDust Patreon members get access to new STL downloads each month, early access to new designs, and monthly adapter bundles. Three tiers: Dust Buster ($5/mo), Shop Pro ($15/mo), Workshop Legend ($30/mo). All tiers include unlimited STL downloads from the existing library.
What size adapter do I need for a Milwaukee M18 FUEL circular saw?
Milwaukee M18 FUEL circular saws (2731-20, 2732-20) use a 1-1/4 in. (31.75 mm) outer diameter dust port. For a standard shop vac with a 1-7/8 in. hose, you need a 1-1/4 in. to 1-7/8 in. adapter. The Milwaukee M18 FUEL compact shop vac (0882-20) also uses a 1-7/8 in. hose, so the same adapter applies. Use our configurator, select your M18 FUEL saw and your vac model, and we will confirm the right part.
What adapter does a DeWalt DCS570 or DCS391 circular saw need?
DeWalt 20V MAX circular saws use a 1-1/4 in. (31.75 mm) outer diameter dust port. For a standard shop vac with a 1-7/8 in. hose, you need a 1-1/4 in. to 1-7/8 in. adapter. The DeWalt DCV517B compact cordless vac uses a 1-1/4 in. hose, so a 1-1/4 in. to 1-1/4 in. friction sleeve works. The DeWalt DCV586B uses a 1-7/8 in. hose, so the standard 1-1/4 in. to 1-7/8 in. adapter applies.
How do I connect a Makita LXT or XGT tool to a shop vac?
Makita LXT 18V and XGT 40V tools use a 36mm outer diameter dust port. This is larger than Milwaukee and DeWalt tools. You need a 36mm to 47.6mm adapter for a standard 1-7/8 inch shop vac hose. If you use a Makita XCV04Z or XCV10Z cordless vac, those also use a 1-7/8 inch hose, so the same 36mm to 47.6mm adapter applies.
What is the difference between a 1-1/4 in. and 35 mm tool port?
Milwaukee, DeWalt, and Ryobi tools use 1-1/4 in. (31.75 mm) ports. Bosch and Metabo HPT tools use 35 mm ports. These are different sizes and require different adapters. A 1-1/4 in. adapter will be loose on a 35 mm port. A 35 mm adapter will not slide onto a 1-1/4 in. port. Always measure your port or check our tool database to confirm your size before ordering.
Can I use a GulpDust adapter with a Dyson or Miele vacuum?
Household vacuums like Dyson and Miele are not ideal for workshop dust collection. Their ports are typically 25mm to 35mm, they lack the airflow volume needed for sawdust, and their filters clog quickly with heavy chips. That said, our adapters can fit most household vacuum hose sizes. Measure your vacuum hose outer diameter and use the configurator to find a matching adapter.
Do I need a dust extractor or can I just use a regular shop vac?
For most home workshop use, a regular shop vac works well. A 5 to 9 gallon shop vac with a HEPA filter handles circular saws, jigsaws, and sanders fine. A dedicated dust extractor (like Festool CT or Bosch GAS) filters more finely, has better auto-start, and is quieter. If you sand exotic woods, cut MDF, or work indoors without good ventilation, a dust extractor is worth the upgrade. For framing, rough cuts, and garage workshops, a shop vac is enough.
How do I know what size my tool's dust port is?
The easiest way is to use our tool database, search by brand and model number, and we show the verified port outer diameter. If your tool is not in our database, measure the port stub with calipers. Close the outer jaws around the outside of the stub. That is your outer diameter. Common sizes: 27 mm (Festool), 1-1/4 in. or 31.75 mm (Milwaukee/DeWalt/Ryobi), 35 mm (Bosch/Metabo HPT), 36 mm (Makita). Round to the nearest standard size if your measurement is in between.
What if the adapter does not fit my tool?
Contact info@gulpdust.com with a photo of your tool's dust port and your order number. We will measure your specific tool and reprint the adapter at no charge. Our standard adapters are calibrated for typical port dimensions, but individual units vary by 0.5 to 1.0mm. If your tool measures differently, we can adjust the geometry.
Can I use GulpDust adapters with a central dust collection system?
Yes. We make adapters that step up from your tool's small port (1-1/4 in., 35 mm, or 36 mm) to standard 2-1/2 in. or 4 in. central duct sizes. Check our duct reducers category. For a wall-mounted 4-inch port, you need a tool-port-to-2.5-inch adapter and a 2.5-inch-to-4-inch reducer. The configurator handles this automatically if you select your duct size as the output.
Are the print settings important for the STL downloads?
Yes. We recommend: PETG filament, 0.2mm layer height, 3 to 4 perimeter walls, 20 to 25 percent infill, no supports needed (print the adapter vertically, tapered end down). These settings produce a tight enough tolerance for a good friction fit. Printing in PLA will work but the adapter may soften in hot conditions.
Still have questions? Reach us at info@gulpdust.com.
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