3D Printing and Range Finders

BreachBangClearRyan

Private
Minuteman
Aug 27, 2019
47
73
I wanted a slimmer cover for the laser gubbins in the front of the Busnell Elite 1 Mile Conx laser range finder. So I plunked it down on a piece of paper roughly traced the contour and took a picture with my phone.

I measured one dimension on the picture and set the scale of it in Fusion 360 and began drawing out the various lines on one side. I then mirrored it on the center line because I'm lazy and it is symmetrical. After this I made an outer line that would serve as the walls of the lid. Then I made a body and extruded it.

My first version I 3D printed was bang on at the top but the bottom needed .010" in length and the curves to be a tad tighter. I made version two with the small changes and it came out perfect. So I ordered some TPU to make a rubber version for it to replace the orange PLA I used.

IMG_20200728_190356_764.jpg
IMG_20200728_190356_766.jpg
 

goneballistic

Village Idiot
PX Member
Minuteman
Jul 17, 2007
250
87
Utah
I can't print with tpu for crap. It always comes out messed up. I need more practice.

Nice job this is a cool project.

I made an optics cage for my Leupold mkIV from petg, it's worked very well
 

BreachBangClearRyan

Private
Minuteman
Aug 27, 2019
47
73
I can't print with tpu for crap. It always comes out messed up. I need more practice.

Nice job this is a cool project.

I made an optics cage for my Leupold mkIV from petg, it's worked very well
Do you have a direct drive extruder or bowden tube setup. TPU works best in direct drive.
 

BreachBangClearRyan

Private
Minuteman
Aug 27, 2019
47
73
Bowden, just a cheap ender 3
That's the problem. They make direct drive upgrades for the ender that would make your life easier. Otherwise I think you have to print TPU super slow.

This might be the second or third 3D printed thing I've seen which is not gay or stupid. Not bad.
I got a 3D printer because I can rapidly prototype things. I made an accessory for my MDT chassis last night that I will eventually post up on here.
 

jliddle

Private
Minuteman
Jan 23, 2010
9
3
I dig this. Once you get your design nailed down, you can sent the file to Protolabs or another printing service to get the parts printed in a flexible material using an SLS or SLA machine. This would give you much better appearance and the material properties would be far more isotropic than what you get from an FDM machine like an Ender3.
 

Terry Cross

Dingleberry
PX Member
Minuteman
Mar 15, 2003
1,434
2,121
Alexandria, LA 71303
www.kmwlrs.com
An update on this project. I got my TPU rubber material the other day and finally made the rubber cover. I kind of want to see if I can make scope caps next with flip up fronts.

Suggestion: Edit your model to include a stand off with hole to that you can run a section of para chord through with a knot.
Do the same thing with an improved eyepiece cover and tie to the other end. Easier to stow and keep track of if you don't want to just keep them clipped to the LRF.

Similar thing I did for a couple of spotter eyepieces. Depending on your material, you may want to beef up the root of the extension.

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eyepiece cover.jpg


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BreachBangClearRyan

Private
Minuteman
Aug 27, 2019
47
73
Suggestion: Edit your model to include a stand off with hole to that you can run a section of para chord through with a knot.
Do the same thing with an improved eyepiece cover and tie to the other end. Easier to stow and keep track of if you don't want to just keep them clipped to the LRF.

Similar thing I did for a couple of spotter eyepieces. Depending on your material, you may want to beef up the root of the extension.

.

View attachment 7399170


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I was going to do that in a future version. I was contemplating making one that the front pops out and dangles from a cord to have less material hanging. The joys of being able to make small changes like that on the fly.
 
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