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Another Take on 3d printed Oil Level Sight Glass.

mooserov

Aluminum
Joined
Feb 6, 2021
I found Kerzom's thread on 10EE sight glass 3d printing https://www.practicalmachinist.com/forum/threads/oil-level-sight-glass.389520/ , and I really liked the idea. the only problem is it doesn't look quite right once assembled.
Parts:
1- 23.9mm x 2mm watch crystal from allwatchparts.com (30mm will fit too, there's some slack there) https://allwatchparts.com/20mm-Flat...Crystal-170mm-350mm-01mm-increment_p_676.html $1.75 ea.
2- Square profile Buna-N -019 13/16" ID, 15/16" OD, 1/16" Cross Section https://www.mcmaster.com/4061T124/ $13 for 100
3 - white PLA 3d print filament. ( I have a Creality Ender v3 printer I got for less than $200)
4 - Files on thingaverse: https://www.thingiverse.com/thing:5522594



orig1.jpg
As you can see, the bezel is recessed. For my tastes, it is a bit too much.

origDepth.jpg

Since I have tasked myself to get better at Fusion 360, I started modeling a modified version. I really liked how the original had provisions to retain the O-ring during assembly so I did the same, taking it a step farther with a groove molded in to the back side as well.

IMG_20220920_090355061_HDR.jpg

This holds the o-ring tight, have to press pretty hard to get it to insert.


OringGroove.jpg

After an embarrassingly numerous amount of re-designs and reprints, this is what I came up with. you can see one of my previous iterations off to the left there.

sidbyside.jpg

Modeled a groove on the face that can be painted for contrast if desired. Sharpie PRO marker is oil resistant. The results are a flush mount oil sight glass.final1.jpg

finalDepth.jpg

Anyone have any suggestions for improvements I'm all ears.
Cheers,
Mooserov
 

GrantGunderson

Hot Rolled
Joined
Jun 4, 2021
Location
Bellingham, WA
I found Kerzom's thread on 10EE sight glass 3d printing https://www.practicalmachinist.com/forum/threads/oil-level-sight-glass.389520/ , and I really liked the idea. the only problem is it doesn't look quite right once assembled.
Parts:
1- 23.9mm x 2mm watch crystal from allwatchparts.com (30mm will fit too, there's some slack there) https://allwatchparts.com/20mm-Flat...Crystal-170mm-350mm-01mm-increment_p_676.html $1.75 ea.
2- Square profile Buna-N -019 13/16" ID, 15/16" OD, 1/16" Cross Section https://www.mcmaster.com/4061T124/ $13 for 100
3 - white PLA 3d print filament. ( I have a Creality Ender v3 printer I got for less than $200)
4 - Files on thingaverse: https://www.thingiverse.com/thing:5522594



View attachment 375305
As you can see, the bezel is recessed. For my tastes, it is a bit too much.

View attachment 375306

Since I have tasked myself to get better at Fusion 360, I started modeling a modified version. I really liked how the original had provisions to retain the O-ring during assembly so I did the same, taking it a step farther with a groove molded in to the back side as well.

View attachment 375307

This holds the o-ring tight, have to press pretty hard to get it to insert.


View attachment 375308

After an embarrassingly numerous amount of re-designs and reprints, this is what I came up with. you can see one of my previous iterations off to the left there.

View attachment 375309

Modeled a groove on the face that can be painted for contrast if desired. Sharpie PRO marker is oil resistant. The results are a flush mount oil sight glass.View attachment 375310

View attachment 375311

Anyone have any suggestions for improvements I'm all ears.
Cheers,
Mooserov
Those look AWESOME! Interested in selling a few sets of them?
 

mooserov

Aluminum
Joined
Feb 6, 2021
No Leaks!
One issue, the face of the insert is too close to the glass and the surface tension keeps the glass wet, not an accurate level. I'm iterating the design and printing again to test.
 

Cal Haines

Diamond
Joined
Sep 19, 2002
Location
Tucson, AZ
Out of curiosity, is clear media available for 3D printers? I'm wondering if it would be possible to 3D print the "glass" right onto the white part.
 

mooserov

Aluminum
Joined
Feb 6, 2021
Resin printers use a liquid and cure with ultra-violet light. they can print clear with a little post prep. They also print very fine detail better than the filament hot-glue style. I do not have a resin printer.

Latest iteration seems to be working ok. I'll update the files later today.
 

mooserov

Aluminum
Joined
Feb 6, 2021
files are updated on thingaverse and I have a few printed if anyone wants to buy some instead of sourcing the parts. I'm asking $10 each for them plus shipping.
 

Doozer

Titanium
Joined
Jul 23, 2001
Location
Buffalo NY
Looks a bit like Latex wall paint.
Perhaps I am seeing some adhesion problems.
You might want to investigate that
while it is taken apart and easy
to get that sorted out.

-D
 

GrantGunderson

Hot Rolled
Joined
Jun 4, 2021
Location
Bellingham, WA
Sherwin Williams alkyd. Takes a while to get hard and it was still soft when I pulled the half nut lever off. It will get touched up.
When I was trying to decide what paint to use on mine, I tested some of the Sherwin Williams Alkyd stuff. It took FORVER to harden. Damn close to a full month! Thats what drove me to go with the Epoxy / Poly combo. If I was to do it over again, I think I would just use, Delfleet Essential. It is what I am using on the interior of my lathe, it goes on easily, ( just primer and it), and its extremely durable and resistant to damn near everything.
 

GrantGunderson

Hot Rolled
Joined
Jun 4, 2021
Location
Bellingham, WA
So apparently there is a change in design over the years. The ones I got from mooserowv do not fit my 44 10EE.
IMG_0636.jpg
IMG_0638.jpg
At some point over the years, Monarch must have slightly increased the size of the bore for the sight glasses. Its too bad as the ones that mooserov made look amazing!
 

mooserov

Aluminum
Joined
Feb 6, 2021
I shall get some replacement printed to fit that and shipped ASAP.

Does the outer diameter fit in the main casting OK?
 

mooserov

Aluminum
Joined
Feb 6, 2021
no worries. It is a full .020 smaller than the ones on a 1950. I pulled one off the gearbox to make sure that the apron sightglass wasn't an anomoly. Easy enough to fix and now I know more.

also, the screws keep everything centered so it won't make a fitment difference. o-rings and glass will fit the same.
 

mooserov

Aluminum
Joined
Feb 6, 2021
Loses the rim that holds the O-ring in place, but it is still centered by the outer aluminum ring it sits in.
 

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