3D Printed Fatsac 3/4" Plug

[skidaddle]

I needed some extra plugs for the ballast bags in my boat on short notice so I designed some up quick and printed them. There's a spot at the bottom of the plug for an o-ring. I used a 23MM ID x 3MM thick one I had laying around.

If you have access to a printer and need some extra plugs, here they are:

https://www.thingiverse.com/thing:6131238

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[TravisM89]

Thank you! What were the dimension i should be seeing? When i brought it into my slicer it was extremely large.

[chpthril]

Thank you! What were the dimension i should be seeing? When i brought it into my slicer it was extremely large.

If these are for the sacs I just sold you, plugs are on their way with the RCA and should get there in a few days via USPS flat-rate.

Fly High uses a weird 3/4" straight thread pitch.

[TravisM89]

If these are for the sacs I just sold you, plugs are on their way with the RCA and should get there in a few days via USPS flat-rate.

Fly High uses a weird 3/4" straight thread pitch.

I need a couple for some old sacs I have laying around that I'd like to try selling

[skidaddle]

Thank you! What were the dimension i should be seeing? When i brought it into my slicer it was extremely large.

The head of the knob is 1.5" OD. Units are inches, so maybe that messed up the import? I've attached a screenshot of the dims in PrusaSlicer.

[TravisM89]

The head of the knob is 1.5" OD. Units are inches, so maybe that messed up the import? I've attached a screenshot of the dims in PrusaSlicer.

Now that you mention it, thats probably what happened. Mine was not set for inches. Thank for the advice and for sharing!

[skidaddle]

If these are for the sacs I just sold you, plugs are on their way with the RCA and should get there in a few days via USPS flat-rate.

Fly High uses a weird 3/4" straight thread pitch.

The threads are just NPS, nothing exotic.

For the plugs I designed, Fusion doesn't have external NP threads available so I just used BSPP, good enough for printed plastic parts in a ballast bag sealed with an o-ring.

[chpthril]

The threads are just NPS, nothing exotic.

For the plugs I designed, Fusion doesn't have external NP threads available so I just used BSPP, good enough for printed plastic parts in a ballast bag sealed with an o-ring.

I am not referring to the threads on your application. Im referring to the threads in the custom Fly High sacs TM just purchased from me. Been a Fly High dealer for 15 years, they are not NPT.

[skidaddle]

I am not referring to the threads on your application. Im referring to the threads in the custom Fly High sacs TM just purchased from me. Been a Fly High dealer for 15 years, they are not NPT.

Ah, got it. So they used a different 3/4" thread on their custom sacs?

I've got some W719's, W705's, some Wakemakers Z1 bags, and a random 400lb bag and they've all got the same (or close enough that I can't tell a difference) 3/4" threads on them. Not NPT though, NPS.

[chpthril]

Fly High uses a 3/4" thats not tapered and Wake Makers, as long as I can recall, has used a 1" tapered thread. Depending on how long ago you got the "wakemakers" Z1 bags, they may actually be Fly High built sacs, sold by WM. They were a ballast retailer before becoming a bag manufacture.