Gday fellow tool fans, here's my latest gadget born from necessity. A somewhat challenging build with a few unique tips, I hope you enjoy the build,
All the best, stevoh
Attachment 39710
https://youtu.be/zCcJ2T_Phtw
Printable View
Gday fellow tool fans, here's my latest gadget born from necessity. A somewhat challenging build with a few unique tips, I hope you enjoy the build,
All the best, stevoh
Attachment 39710
https://youtu.be/zCcJ2T_Phtw
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Thanks Stevohdee! We've added your Internal Dome Tool to our Lathe Accessories category,
as well as to your builder page: Stevohdee's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-internal-dome-tool"> <img src="/uploads/249266/homemade-internal-dome-tool.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-internal-dome-tool">Internal Dome Tool</a> <span> by <a href="https://www.homemadetools.net/builder/Stevohdee">Stevohdee</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/lathe'>lathe</a> </div> </div> </div> </div>
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I don't watch a lot of tool builds. This one caught me, you circumvented the common solution; a yoke. I like it.
Extending the hinge pin, allows a reference to set accurate radii, via height gauge. Another method would leave holder in place, referencing with a known size block against a surface, zero a dial and back up, then set protrusion of cutter.
A hint on lapping. Cutting action improves by alternating straight strokes, rotating the part 15°-45°, produces a crosshatch [aka 'lay'] before final desired finish. Another technique is tracing figure 8's.
Yoke in this case provides movement to swing cutter, essentially a hinge.
https://www.google.com/search?q=hold...l87LWMCxqNU18M
A hemisphere is produced by the tool tip distance [radius] from hinge centerline. Extended, it forms a concave. Retracted, generates convex.
Thanks for your advice, I had to Google yoke but came up with a thing to align two bullocks but a bit more digging found some pertaining to machining, still confused. I'd have to see one in action to fully understand how one would make an internal dome. Was thinking of center punching a dot in the middle of the hinge pin then using a divider or compass to set radius. Will try your tips on finishing on the next build, thanks, regards steveQuote:
Originally Posted by Toolmaker51
Hang on, found it... A ball/radius turning attachment has a yoke, so it can be set up to do inside radius, got it, thanks again
That was an interesting video!
Great work!
Thanks for the link, I've seen plenty of ball turners but never realized they could be used in reverse, otherwise I would have made one... Only prob would be chatter by extreme overhang with large radii I guess, your info much appreciated, cheers
Thanks Dick, always a pleasure to get accolade from someone with your talent, regards steve
The assorted commercial & DIY ball turning apparatus are proportioned to lathe swing; the largest have substantial form tools to dampen vibration. Few get used in roughing out radii, chatter can be reduced in ways to include wrapping with rubber or lead, tapered holder/ cutter, rpm, feedrate and tool form.
Good job,I have never seen a die holder like that is it something else you’ve made?
Thanks skun knuckles, love the name, haha, yep made die holder, it simply slides over the tailstock quill, cheersQuote:
Originally Posted by Skun Knuckles
Stevo,
here is an example of a yoke curve turning attachment.
Attachment 39729
Here is my not yoke interpretation:
https://www.homemadetools.net/forum/...2832#post97247
Thanks Tony for your link, I now know what a yoke is, no yoke haha. I'm still yet to come across any vids of the yoke system doing what I need that is doming the inside of my container lids. My tool can comfortably do 15mm radius up to about 60mm (if I dare) without hitting the chuck Jaws. I feel the yoke systems I've seen couldn't do this as well as what I've designed, best regards stevo
Stevo,Quote:
Originally Posted by Stevohdee
The yoke in the picture can do concave and convex. For concave you just swing the tool holder part out 180 deg. However, like you I am not over impressed by the yoke type. I think there are videos on the net showing concave machining but generally for making pipe bending formers not domes.
BTW. I will not be using my ball turner in the future. I have programmed convex and concave machining into my lathe conversion.
https://www.homemadetools.net/forum/...ewing-up-85620
Congratulations Stevohdee - your Internal Dome Tool is the Homemade Tool of the Week!
This was a difficult week to win, but this is a great video and a clever tool built with even more homemade tools.
Some more nice tools from this week:
Jib Crane by Frank S
Kill Switch Extension Cord by Tuomas
Ball Screw and Electronic Lathe Conversion by tonyfoale
Scaffolding and Crane by bouboulas
Door Stop by diyfixman
Wood Dent Removal Method by diyfixman
Belt Sander Dust Collector by tonyfoale
Angle Grinder Mount by orioncons36
Milling Machine Stock Support by tmate3
Drill Press Table Extensions by Didpoolhall
Stevohdee - We've added your tool entry to our All Homemade Tool of the Week winners post, and you'll be receiving a $25 online gift card, in your choice of Amazon, PayPal, or bitcoin. Please PM me your current email address and award choice and I'll get it sent over right away.
More importantly, this is your 10th Homemade Tool of the Week win! I've just added the golden wrench-on-pedestal graphic to the awards showcase in your postbit, visible underneath your avatar.
:rocker: :clapping: :thumbsup: :bow:https://www.homemadetools.net/forum/...OfTheWeek1.png:bow: :thumbsup: :clapping: :rocker:
You join these six other 10-time winners: rossbotics, Christophe Mineau, mklotz, Vyacheslav.Nevolya, Tuomas, and tonyfoale. Congratulations again and good job :thumbsup:
Here are all 10 of your Homemade Tool of the Week winning tools:
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Another well-deserved win. You came up with a truly unique design.
Thanks Bruce, appreciated, cheers mate
Nowhere near as precise, but with a cool surface finish, we took an angle grinder and mounted it to the tool post "on edge". When we turned it on and moved in (slowly) it gave a beautiful radius grind with sweet swirly patterns. Not much in the way of adjustment besides wear, but cool and radius-y as well. I like yours better for the adjustability of it. Cool!
