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  1. #1

    how to upscale a 3d file to match my measurements

    Hi all,basically, i have downloaded this file https://www.thingiverse.com/thing:3723903 and need to upscale it to fit a 60ml syringe.it's for my great nan as she has to be fed via a feeding peg and she struggles to plunge the syringe when full of her feeding liquid.i have no idea on how to do this, i have the syringe with me and some calipers but no idea on how to use them any info would be much appreciated

  2. #2
    Super Moderator
    Join Date
    May 2020
    Posts
    442
    Suggestion...import the STL file into your slicer and you should be able to adjust the size there up or down ready to export it as a G-code file.

  3. #3
    Staff Engineer
    Join Date
    Jun 2014
    Posts
    811
    @TayZc1, I found an amazon item that presents the dimensions: https://www.amazon.com/Pack-60ml-Syr.../dp/B07H3MH52R If you can confirm that these values match the item you have, it provides a starting point. Using the 20 ml model in the link you provided, I measured the opening for the syringe. It appears that the 20 ml syringe requires about a 21.5 mm diameter to fit in that model. The amazon link indicates a 31 mm diameter, which scales up by 144 percent. It's possible that you'd want to go a bit larger, perhaps 145 percent, but too much could create slop in the design. At least with upscaling a part, it becomes less fragile as a result. Using the 144 percent figure, I've scaled the objects using Meshmixer and attached them. Obviously, you'll want to ensure that the length is appropriate. That's a parameter I did not check. I'm hopeful that adjusting the inside diameter of the female portion will provide for proportional matching of the syringe.
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