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Fitting a cap iron from a Clifton plane

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Forum topic by jtruc34 posted 09-22-2019 02:01 PM 252 views 0 times favorited 6 replies Add to Favorites Watch
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jtruc34

10 posts in 45 days


09-22-2019 02:01 PM

Hi,

I tried to flatten a cap iron from a Clifton bench plane so that it fits the iron. I did it on a DMT Dia stone, which is supposed to be flat.

The problem is that now, the edge is straight, but not parallel to the body of the cap iron. In other words, I introduced a twist.

How could I remove it?

By the way, Clifton cap irons are not like on antique planes. They are basically flat surface with a sort of indent machined on the front (my English is too poor to explain it, but I could post a photo of it later).

Thank you.


6 replies so far

View Tim's profile

Tim

3859 posts in 2475 days


#1 posted 09-22-2019 02:59 PM

If I understand the twist you put in, I don’t see how you would fix it without going back to the diamond stone. Unless you wanted to physically bend the twist out of it, but that might make things worse.

Aren’t Clifton planes fairly expensive? If the cap iron didn’t fit properly couldn’t you ask for them to replace it? I don’t know much about Clifton though.

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jtruc34

10 posts in 45 days


#2 posted 09-22-2019 03:25 PM

The thing is, it is quite an old iron (like 20 years, I don’t know for how long Clifton has been there).

Yes, I know I have to go on the Diamond plate, but I don’t know what I did wrong since it is precisely on that plate that I created this twist.

View Eric's profile

Eric

108 posts in 751 days


#3 posted 09-23-2019 10:46 PM

Is the Clifton cap iron the two piece version:

It’s hard for me to imagine “twist” as we use word normally. Perhaps there is some mis-alignment on the edge where the cap iron meets the blade edge due to bad grinding? If that’s the issue you’ll need to re-grind the cap iron’s edge properly. If significant material was lost during the bad grinding the cap iron will need to be bent in a manner than gives new material to the edge so the bad grinding can be replaced with a proper cap iron edge.

You’re using a good substrate for flattening and sharpening. Maybe you should watch some videos by Paul Sellers on sharpening. He’s got a simple, accurate technique that works well.

-- Eric

View Derek Cohen's profile

Derek Cohen

470 posts in 4482 days


#4 posted 09-24-2019 06:17 AM

I suspect what you did was to remove the toe section, and lap that. Then, when putting the two pieces together, the combination would not sit flat.

In which case, joint the two parts (wrap with tape). The toe will be skew, but now lap this until it is square.

I do dislike these Clifton chipbreakers. The one I have is epoxied together. Instead, I use a Lee Valley chipbreaker.

Regards from Perth

Derek

-- Buildiing furniture, and reviewing and building tools at http://www.inthewoodshop.com

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jtruc34

10 posts in 45 days


#5 posted 09-25-2019 07:09 PM

No, mine is in one solide piece. In fact, I suspect it to be simply a piece of metal with a bevel and a machined indent on the other face to make it a bit bendable under the pressure of the cap iron.

I may well have completely fooled myself and this plane may really well be only 5 years old. I really have no information about it.

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Eric

108 posts in 751 days


#6 posted 09-26-2019 10:54 PM

One piece or two, you will still want to re-grind the cap iron’s edge properly. If significant material was lost during the bad grinding the cap iron will need to be bent in a manner than gives new material to the edge so the bad grinding can be replaced with a proper cap iron edge.

You’re using a good substrate for flattening and sharpening. Maybe you should watch some videos by Paul Sellers on sharpening. He’s got a simple, accurate technique that works well.

-- Eric

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