Super accurate circle sanding jig

[@cdw3423]

At 45 degrees 1mm of slide travel will take 1.4142mm from the diameter. You might recognize that as the square root of 2, or 2 * cos(45). To do what you want, you need the angle to be 60 degrees, cos(60) = 0.5. In your example a 1/4 turn of your 1mm pitch screw takes you from 116.24mm to 115.90 a difference of 0.34mm if you multiply 0.25mm by the sqrt(2) you get 0.35mm so your jig is within about 0.01mm of what it should do, that is really good. But to do what you want to do, you need to change it to 60 degrees from perpendicular to the sanding disk.

[@NewYorkshireWorkshop]

thanks. obviously i hadnt thought it through properly and had my logic all wrong! it makes sense now that i think about it.

[@cdw3423]

@@NewYorkshireWorkshop/videos I just hope I can keep someone down the road from scratching their head when they find out the slide to diameter ration isn't 1 to 1.

[@jazzdad52]

Chris Woodhouse I understand why 45 degree isn’t 1:1 ratio, but why then is 60 degrees? It seems to me it would need to be 90 degrees.

[@jazzdad52]

Oops, coffee kicked in, and I realized that the if the adjustment brings the piece 1 mm closer, it reduces the size by 2 mm. I’ve been turning for 9 years, you’d think I would know that. Now I understand why 60 degrees.

[@mariuszrobak3849]

We're able to be more precise at 75,522487814 degree. cos(75,522487814) = 0,25

[@aurktman1106]

I see you’re using the Mark 1 Calibrated Eyeball unit for effective measuring during the squinting process. Good choice, quite accurate!

[@PeterErfurt]

That was .... extremely clever!

[@johnthompson3462]

That is a really clever - yet simple and cheap - solution to a pain in the butt problem for woodworkers. Great vid

[@ianvicedomini2648]

Utter genius. Great video mate

[@kevinbeale4879]

lovely piece of engineering

[@alastairchestnutt6416]

Great idea. Had just made a very simple jig which worked but I was looking for a screw adjust mechanism. Great idea.

[@tommooe4524]

Another great jig

[@avago2day]

Great idea perfectly executed. I have a few of those little optick clamps and they're very useful for so many jobs.

[@tjacksonwoodworker3726]

You have amazing skill, talent and experience for someone so young. Where did you learn you craftmanship?

[@brianalder2234]

Nice one ! I do believe I shall have ago at making one ! Big thumbs up !!

[@Simon_W74]

Now that’s a very handy jig.

[@darrylbuckett5380]

Are we related

[@Rubbernecker]

Brilliant!!!

[@bricology]

Great video, and reason enough for me to subscribe. One quibble: the clamp as a stop is deeply unsatisfying to me. When I build this I am going to search for a more elegant solution.

[@robfoster5516]

Inspired clever simple, nice one👌👍

[@tonycasey3183]

That's clever!

[@NavinBetamax]

So smart....... at 9:18...pointing to a non-existant "" Detailed Plan "" ......Smart Alec !

[@NewYorkshireWorkshop]

good point, when i wrote the blog i decided it was pointless but i can draw one up for people who cant figure if out for them selves.

[@NewYorkshireWorkshop]

I just added the 3D model to the blog post. i hope it is useful

[@billballeza377]

I don’t want the jig, but I do want that nifty clamp!

[@dr.skipkazarian5556]

Engineering expertise and native craftsmanship....what a talent-filled combination. Could you please come across the Atlantic and fix America....it's in terrible shape? Thanks, best wishes, and stay healthy!

[@dr.skipkazarian5556]

@@RobbieJack78 Bugger off MAGAT, I don't live in the mainland USA...hah....I'm more concerned with the damage Don "Spit for Brains" Trump is doing to the world. Enjoy your life of poverty and ignorance.

[@dr.skipkazarian5556]

@@RobbieJack78 Ask yourself, or a friend, if America is better off today...divided, full of hate, at odds with its former allies, a very unstable and untrustworthy administration, a law breaker at the helm clueless during a crisis....I'll stop there and let you think about my original comment. Best wishes and stay healthy.

[@pierreboone568]

Very nice work

[@Stop..carry-on]

Good idea!

[@tri11est]

Perfick! Lol, nice job, I like your work flow sir keep it up

[@BalancedLugger]

Superb!

[@Crooks103]

Excellent

[@terrykirkpatrick3616]

Hi, I'm interested in your vacuum box Do you have a video on building it and if not would you consider making one for viewers like me ? Enjoy watching your work, well done....Terry

[@NewYorkshireWorkshop]

no unfortunately I made it before I started the youtube. I have decent write up on the patron with cross sections though.

[@nickyork8901]

This is brilliant. Could you come up with something similar for doing kumiko strips please! I tried, but I don't have your skills. I also don't quite get why you need it for the spindle moulder fitting, could you explain the context a bit? I read the blog to find out but still not clear on this.

[@NewYorkshireWorkshop]

The spindle moulder set up can be seen prominently in this video- kzbin.info/www/bejne/iZTdhZ6cnLGonJo and i made the guide ring set up in this video- kzbin.info/www/bejne/n6eWap1ujM2Josk The kumiko question is interesting and could be tricky, most of the Kumiko ive seen uses a separate jig for each angle, to be planed by hand and sometimes have a depth stop but it would sure be quicker if something could be made for the sander. Ill have a good think about it, id love to have a go at Kumiko!

[@garychance4494]

not sure if this is what you mean re Kumiko strips? kzbin.info/www/bejne/Z3vchpqshNOdfq8

[@nickyork8901]

@@NewYorkshireWorkshop Thanks a lot for the reply on the spindle moulder guide ring. Regarding kumiko, there is something close on Mike Farrington's channel, kzbin.info/www/bejne/np6yi3h3nL14abc at 24:27 in his video, but I think your set up is probably going to add to this idea really well.

[@nickyork8901]

thanks @@garychance4494 The sled for cutting the grid work is useful, and I did use my table saw to do them like this, but my question was more about cutting the little inserts for the Asa No Ha pattern. These have 67 degree angles etc and although one can cut them with planing jigs it somehow is a pain and not always successful, even with a very sharp plane (unless you happen to be Japanese!). Hence the idea of using the sanding jig.

[@markgordon4368]

Aye up I've used bar optic clamps too 🤣 😂

[@twocvbloke]

I remember at school being told off for trying to sand that much off something I was working on with the disc sander, got told to saw the stuff off first and then go back to sand it, like it actually made any difference... :\

[@markscheiner3952]

Hi Russ. Sent you a message a few days ago on your blog asking about your membrane press. Not sure whether you saw it. Would love to pick your brains about it if possible. Thanks a lot. Mark

[@NewYorkshireWorkshop]

i replied mate, look on the page you messsged me from and youll see it. i think it was the super slippery planer hack page

[@markscheiner3952]

Thanks Russ. Appreciate you coming back to me. Sorry I missed it. I’ve pinged you back a couple more questions on your blog when you get a second. Thanks again

[@Marlucant]

Ottimo!

[@jimfreeman3636]

Do you use some form of CAD? I find I can’t even think w/o it anymore. Just curious what assists your muse.

[@NewYorkshireWorkshop]

i sometimes use sketchup, mostly if something is fairly complex or if i think ill work on it over a long period so i dont forget the design. on this jig i just winged it.

[@tommypetraglia4688]

A man's intelligence is not so much based on what he knows but his ability to figgr it out... esp with what's only on hand. Creative, resourceful elegant and simple and to wit, nice vid. As the Irish carpenters I worked with a long time ago would say... You're a right good chippy. Is that a coal bin over by the scrap wood, the cast iron thing between masonry block in front od a door?

[@jimfreeman3636]

Tommy, yes, I agree w/ you. But ….. I learned drafting many years ago and still have a set of drafting tools (a pain in the butt), and then I learned AutoCAD. Build your drawing in layers and the cut sheets just fall right out. Want accuracy? Build it in CAD. Want some strange angles? CAD. Absolutely has to be dead on? CAD. A crutch? You bet and a damned good one!

[@jimfreeman3636]

Question on Sketchup please, and thanks in advance for your time. Is that the free version of Nanosoft/NanoCad? if so, how is that working for you? This is something I've been eyeing in lieu of AutoCAD. If you haven't had any major bugs, I'll probably give it spin. Thanks again.

[@NewYorkshireWorkshop]

ive never heard of nanosoft or nano cad so im not sure. as far as im aware Sketchup is an independent program made by google. look for sketchup make which is the free version and the one i use. it doesnt seem to like the amd gpu in my laptop but my cheap office computer never has an issue.

[@MrBez007]

Genius ! Where about in Yorkshire are you if you dont mind me asking ?

[@Dennis-kj1kz]

Six jerks give it a thumbs down. Really good idea I will be building my own. Good vid too.

[@crossgrainwoodproductsltd9230]

Me too! Great jig and I will use it often too!!

[@BettySwollocks13]

Is the ball and spring really necessary?

[@NewYorkshireWorkshop]

it stop it from self adjusting, you could use a lock nut instead. or hit the inserr with a hammer to squash it a tiny bit to make it grip the bolt just enough.

[@ubiratanoliveira692]

Excelente jig. Amigo, habilite a tradução nos seus vídeos, ajudaria a muitos.

[@NewYorkshireWorkshop]

I Didnt know that was a thing, i turned it on, thanks.

[@joycemiller4716]

Is that an optic clamp I saw there

[@NewYorkshireWorkshop]

haha well spotted! from my days of fitting out pubs.

[@moreirinha22224]

woodwork podium .

[@svenHarmynt]

fuck yeah

[@sphlouge]

Ripping on the chop saw is a no no at any time

[@psykosis101]

No one likes an armchair safety officer

[@dsigetich]

It’s kinda fun watching you work, but that didn’t last long, because you never showed me what the hell you are building. You gave me process, but there was nothing to hook the process to - no picture in my brain that your work supported. Maybe next time…