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Thread: House and Car Key Chain

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    Paul Jones's Avatar
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    House and Car Key Chain

    This is a great gift for friends and family.

    Along the lines of my previous postings for "kitchen utensils" with knurled stainless steel handles (see e.g., Kitchen Tools - Stainless Steel Handles for Coffee Demitasse Spoons ), I made key chains that are allow the house key and car key to be separated (great for valet parking).

    House and Car Key Chain-split-key-ring.jpg

    The key chain can be separated into two individual parts by unscrewing a stainless steel 8-32 threaded part. The main body of the key chain is made from 0.375" diameter stainless steel 303 rod turned-down to 0.364" for a very clean 21 pitch knurl application. I used a 8-32 SS all-thread rod attached with Loctite 620 rather than single point threading or cutting with a 8-32 die. Every way would work very well but by taping a 8-32 thread and gluing in the 8-32 threaded rod was a much easier operation.

    House and Car Key Chain-stainleess-steel-303-key-ring.jpg

    I bought the stainless steel rings at Amazon and the combined small and large pair allow a very flexible key chain for being in your pocket or purse.

    House and Car Key Chain-drilling-cross-hole-key-ring.jpg House and Car Key Chain-parting-off-one-section-key-ring.jpg

    Thank you for looking,

    Paul Jones

  2. The Following 7 Users Say Thank You to Paul Jones For This Useful Post:

    Altair (12-07-2018), Frank S (12-06-2018), high-side (Yesterday), LMMasterMariner (12-07-2018), PJs (Yesterday), rossbotics (Today), Seedtick (12-07-2018)

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    Frank S's Avatar
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    Thanks Paul Superb knurling job.
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

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    Paul Jones (12-07-2018)

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    Paul Jones's Avatar
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    Frank,

    Thank you Frank. Our grand daughter recently received her car driver's license and we wanted to give her a key chain for her car keys. We thought making something homemade and unique would be a wonderful gift for her.

    There has been some discussion about knurling at HMT and YouTube. In my experience the best way is to pre-calculate and then machine the ideal basic diameter for the knurl pitch before doing the knurling. There are formulas for this but as they say now "there is an app for this" on your smartphone. I use the phone app "Knurling Calculator" for the Imperial pitch knurls from 12 to 80 TPI. It works perfectly each time. In stainless steel, it takes me only two passes from right to left and then back left to right at 140 RPM and a slow longitudinal power feed with lubricating oil when using a simple scissor-type knurling tool (see Knurling Tool Improvement ). This method guarantees a perfect knurl every time.

    Regards,
    Paul

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    PJs (Yesterday)

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    PJs
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    Well done and thoughtful gift for your Grand Daughter! Mine just turned 16 also but no car yet. It's always a pleasure to see your work and read your write ups...especially your fine knurling work. Great to see your Post...Thanks Much!

    PJ
    ‘‘Always do right. This will gratify some people and astonish the rest.’’
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    Paul Jones (Today)

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    rossbotics rossbotics's Avatar
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    Beautiful work Paul, those would make nice Christmas gifts, making the rings in two seperate pieces is a great idea, like you say for valet parking, thanks for sharing.

    Doug
    Comments are always welcome
    Doug



    Tool Plans for Sale by rossbotics




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    Paul Jones (Today)

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    Paul Jones's Avatar
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    Thank you PJ and Doug.

    As Christmas gifts for this year, my wife gave her friends some of the stainless steel "pickle forks" I made with the same type of knurled handles. It has now become gift a tradition when our friends know I will make some type of "kitchen tool" for them and they look forward to seeing what will be next. The key chain idea may be next on their gift list.

    Regards,

    Paul


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