Vacuum Hose Quick Connects, 2.5"

2025-05-24 Update - Added the stl for the oring as some have printed the oring out of TPU for these. I have not tried this so cannot comment on if it works or not. the full circular profile seems like it may cause issues for printing, if that is the case let me know and I can try adding a flat face to the bottom. Though, I have concerns this may cause issues with the mating of the connectors if it doesn't compress as easily. 

2024-02-02 Update - I have finally gotten around to an update for these. I initially modelled a slightly modified, stronger connection which worked well. That was until I was working in the shop and dropped a heavy piece of steel onto the end of the hose connected to the bench mount quick connect. The bench mount survived, the tabs on the hose connection did not (unsurprisingly). I realized that it was inevitable that I was going to break the tabs off from time to time, and that I need to make them replaceable so that I won't need to waste most of the print due to a few small pieces breaking off. I have uploaded the updated files and updated the descriptions below. The new files are labelled as "Style B".

Note, I have migrated over from thingiverse. The old “Style A” are still on Thingiverse, but the Style B is only on Printables.

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Quick connects to use for a shop vacuum setup. I have a rolling bench with a vacuum and cyclone setup built into it and I wanted a way to have an external connection to the vacuum without disconnecting it from the main dust collection setup. I made the bench mount connection where I can remove a cap and then close the tool blast gates, and then use the vacuum around the shop. I also added it to my mitre saw connection so that I can use that hose for the vac setup if I need a bit of extra reach off that side of the bench.

Pieces are designed for:

• 2.5" dust collection hose
• 2-1/4"x 1/8" O-rings. Note that these fit tight, and also need to be stretched a bit, but do fit. Press from the outside of the quick-connects towards the inside and the PLA/PETG should flex a bit and the o-ring will snap into place.
• The replaceable inserts for style B are meant to use M2 socket head screws (anything 6mm to 12mm will work)

Notes on the Files:
Style B:

• There are replaceable insert and non replaceable insert options for some male pieces. If you're using the pieces in a low traffic, low impact area (up on a wall for dust collection or something), the non replaceable insert pieces are fine. The replaceable insert type are to be used in areas where the tabs may be broken by getting stepped on, having steel dropped on them (see my update lol) or by some other force that may break them.
• VQC - Style B - Bench Mount - Allows for a bench mounted hose connection
• VQC - Style B - Male CAP - to seal off the bench mount when it's not in use.
• VQC - Style B - Female CAP - Meant to protect the tabs when the connections are not in use. Not necessarily a required piece, but may help.
• VQC - Style B - Female - The female hose connection. Works with both male styles
• VQC - Style B - Male Taper (58mm), No Repl. Inserts - connection piece for my mitre saw dust collection. No replaceable inserts.
• VQC - Style B - Male Taper (58mm), WITH Repl. Inserts - connection piece for my mitre saw dust collection. Uses replaceable inserts
• VQC - Style B - Std. Male - WITH Repl. Ins - Standard male hose end connection. Uses replaceable inserts.
• VQC - Style B - Std. Male, No Repl. Inserts - Standard male hose end connection. No replaceable inserts.
• VQC - Style B - Replacable Insert - The replaceable inserts used in the above pieces. 6x required for the male connections that use replaceable inserts

Vacuum quick Connect (VQC) Style A

• STYLE "A" IS THE OLD DESIGN - I have not uploaded these files to printables. They are still up on Thingiverse if for some reason you would like them. Style B is better, there really is no reason to use Style A. Except…
• If you need the hose nozzle attachment adaptor. I haven't broken the tabs of my adaptor yet so haven't done an updated Style B model for it yet. I will at some point and will upload it when i do (my apologies!)

Pictures and additional video showing all of the [Style A] pieces. Style B Pieces are similar but better: https://imgur.com/a/5cYQov5

Printing Specifics:

• I'd suggest using at least PETG for these. I've had success with PLA+, but would opt for PETG instead. Haven't tried anything other than those two. 
• Print the Female couplings with the non-hose side on the bed, no supports required
• Print the male couplings with the hose side on the bed, I'd suggest using brims but have had success without as well. No supports required
• Print the bench mount with the non-hose side on the bed, no supports required
• I use 30% infill
• You can opt to print the replaceable inserts on their sides with supports so that the layers print in the stronger orientation. It's they way I've started doing them and there is little waste and it's easy to separate from the supports.