(Topic ID: 177386)

3D Printing Company Reccomendations?


By heatwave

2 years ago



Topic Stats

  • 13 posts
  • 7 Pinsiders participating
  • Latest reply 2 years ago by HHaase
  • Topic is favorited by 3 Pinsiders

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    #1 2 years ago

    I recently picked up a 1964 Midway Space Gun game and it turns out that a plastic sprocket that drives the main target wheel is damaged beyond repair.

    Basically looks like years of use has sheared off the sharp edge that held the sprocket to the key on the end of the shaft that spins the target wheel.
    IMG_3929 (resized).JPG

    Finding a replacement is probably beyond a needle in a haystack, so I was wondering if I could get a replacement sprocket 3D printed. Was hoping to find a place that could use the original sprocket as a base as I have no experience making the 3D digital files. One key is it would have to be made out of fairly tough plastic as it is connected to a bicycle chain.

    Any experience or recommendations? Thanks!

    PS - here is the flyer for the gun game
    Space Gun Flyer (resized).jpg

    #5 2 years ago
    Quoted from swinks:

    Shapeways is a good 3D print service, lots of material options. Add a few Pinsiders here that can draw up.

    Do a search of pinball at Shapeways

    Thanks. I will check into them.

    Would/could they do the CAD based on my original part? (of course cleaning it up to account for the wear). Pretty sure that is beyond my skill set.

    The sprocket does drive a chain and from what I can tell, the target wheel may have gotten caught on the plunger of a fried solenoid and that sheared off the sprocket. Always fun doing detective work on a 50 year old game!
    IMG_3931 (resized).JPG

    #8 2 years ago
    Quoted from Fresh_Wax:

    I'd request an SLS printed part made from nylon.

    Thanks. This is all completely new to me, what is an 'SLS printed part'?

    The guy that 'Mack505' recommended quoted me $145 for the 3D CAD file if I send him the old part. Not sure if that is high, low or right on, so I'm also trying to check a few other places here locally (St Louis area).

    Thanks to all for the input.

    Greg

    #11 2 years ago

    Thanks again for all the information. So it looks like Shapeways can print a Nylon sprocket based of a file I would get created and send to them.

    In looking at all of this, there seem like tons of options. Given my sprocket (and knowing it would have to be 'cleaned up' to recreate a sharp edge on the slot), what kind of service do I need?

    - is it 3D Scanning?
    - if so, I see there are 'Polygon scans', 'Auto Surface' scans, 'Feature Based 3D CAD scans', etc.
    - Basically, trying to figure out what I need help with PRIOR to getting the file printed?

    Sorry I'm such a rookie at this, I'm used to rebuilding pop-bumpers and steppers!

    Greg

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