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Convex / circular grinding jig

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Project by mafe posted 01-30-2011 02:22 AM 6975 views 12 times favorited 28 comments Add to Favorites Watch

Convex / circular grinding jig
a helping hand to keep it

Some time ago I needed to sharpen a rounded plane iron for a scrub plane, so I made this simple jig.
It’s just a curved piece of wood, two bolts, two wing nuts, two large washers and a piece of metal bar.
This allows a steady rest on the grinder, and that you move within the same curve, and so get a precise circle.
If you need different diameters, just make different pieces of wood, and mark them with the size.

1. The jig from the back.
2. From front.
3. With a blade mounted.
4. Once more.
5. The convex plane I made.
6. Blade and jig curve can be made like this.

Press here for my making a convex plane blog.

Hope this can be to some inspiration, or at least make life more easy.

Best thoughts,

MaFe

-- MAD F, the fanatical rhykenologist and vintage architect.





28 comments so far

View mafe's profile

mafe

13872 posts in 4584 days


#1 posted 01-30-2011 02:24 AM

I forgot to write that the reason I posted it was so it could help for the Mike making a bucket blog.
Besty thoughts,
Mads

-- MAD F, the fanatical rhykenologist and vintage architect.

View David Kirtley's profile

David Kirtley

1286 posts in 4493 days


#2 posted 01-30-2011 02:56 AM

This might be the best place to start when making the plane. You have the template for the sole and for grinding all in one step.

-- Woodworking shouldn't cost a fortune: http://lowbudgetwoodworker.blogspot.com/

View wb8nbs's profile

wb8nbs

164 posts in 4187 days


#3 posted 01-30-2011 03:20 AM

Thats a great set of documentation photos!

-- The only difference between men and boys is the price of their toys.

View Dez's profile

Dez

1176 posts in 5572 days


#4 posted 01-30-2011 03:55 AM

Sweet! Thank you!

-- Folly ever comes cloaked in opportunity!

View stefang's profile

stefang

17040 posts in 4829 days


#5 posted 01-30-2011 02:45 PM

Good one Mads.

-- Mike, an American living in Norway.

View jeepturner's profile

jeepturner

947 posts in 4287 days


#6 posted 01-30-2011 05:21 PM

Absolutely brilliant, Thanks for the thought MaFe, or as some call you Mads. I was out in my shop looking at
my Tormak, wondering if I would have to buy another of their well thought out, but way expensive jigs for doing just that.
When I say that I like this web site, it really means that I like the folks who post here, and the depth of knowledge and ideas. Thanks again.
I will now go read the link.

-- Mel,

View B13's profile

B13

463 posts in 4188 days


#7 posted 01-30-2011 09:20 PM

Great! Idea Mads thanks! for sharing.

View bigike's profile

bigike

4059 posts in 4783 days


#8 posted 01-30-2011 09:50 PM

very good idea for putting cambers on plane blades, nice.

-- Ike, Big Daddies Woodshop, http://[email protected]

View mafe's profile

mafe

13872 posts in 4584 days


#9 posted 01-31-2011 01:26 AM

Hi guys,
Big ike, that is what you call it! Cambers. (I learn slowly wood tecnical English) Thank you.
B13, ;-)
Mel, my name is Mads yes. Glad you could use it, then the post was allready worth making, thank you.
Mike, smile, you can use it also on your ‘dry’ grinder, I saw you had a rest.
Dez, ;-)
wb8nbs, klick! Canon Eos 400D.
David, I agree.
Thank you for the comments,
best thoughts,
Mads

-- MAD F, the fanatical rhykenologist and vintage architect.

View SgtSnafu's profile

SgtSnafu

960 posts in 4766 days


#10 posted 01-31-2011 03:47 AM

Mads – I always enjoy seeing the innovations you share here.

Thanks !!

-- Scotty - aka... SgtSnafu - Randleman NC

View swirt's profile

swirt

7790 posts in 4467 days


#11 posted 01-31-2011 06:04 AM

Nice work Mafe. I use something similar. What are the slots for on on either side of the bolt on the left side (in the first photo)?

-- Galootish log blog, http://www.timberframe-tools.com

View mafe's profile

mafe

13872 posts in 4584 days


#12 posted 01-31-2011 12:05 PM

Swirt, they were made only for you to ask! No they are just left overs, since it was a piece of scrap. I do love that you ask, you are always so sharp my friend (nothing passes your nose unseen).
The hole in the middle is for alternative mounting, but this i’m sure you figured out.
Scotty, allways happy to see you on my post, thank you.
Thank you both for the comments,
Besty thoughts,
Mads

-- MAD F, the fanatical rhykenologist and vintage architect.

View DaddyZ's profile

DaddyZ

2475 posts in 4535 days


#13 posted 01-31-2011 08:24 PM

What No Pipe !!!

-- Pat - Worker of Wood, Collector of Tools, Father of one

View anon's profile

anon

417 posts in 4391 days


#14 posted 02-03-2011 01:38 AM

nice jig mads :)
will come in handy!

View mafe's profile

mafe

13872 posts in 4584 days


#15 posted 02-03-2011 01:50 AM

DaddyZ, Behind my hand you see a little of not just a pipe, but my pipe rack, so this one might be ok…
I start to forget sometimes… Sorry.
Flemming, I used it today!
Best thoughts,
Mads

-- MAD F, the fanatical rhykenologist and vintage architect.

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