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Lapping #8 Bedrock Plane

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Forum topic by Marc5 posted 04-10-2009 11:50 AM 997 views 0 times favorited 3 replies Add to Favorites Watch
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Marc5

304 posts in 2008 days


04-10-2009 11:50 AM

Hi all,

I finally purchased a Type 3 Bedrock #8 Jointer on Ebay. It is in good shape and I intend on using it as I do with all of my tools. I checked the sole of the plane with a straight edge and found it had bit of a camber, mostly from the handle towards the tail.

I began lapping the plane with about a 1/32” to remove. Using the bed of my table saw in lieu of my lapping plate to flatten the sole I worked on it for about a hour with 80 grit paper and still have a ways to go. Based on my past experience, it appears to me this could be a 4 – 6 hour process to achieve a flat and smooth sole. Quite frankly I’d rather be making saw dust than metal shavings. I believe a bit of a camber is better than the opposite (convex) and this leads to my questions.

Will a small amount of camber in the sole of such a large plane affect the performance? Has anyone used a machine shop as part of a plane tune up? Any tips to speed up the process is appreciated.

-- Marc


3 replies so far

View Julian's profile

Julian

880 posts in 2192 days


#1 posted 04-10-2009 04:03 PM

The old #7 and larger planes seem to mostly not be straight. I figure that the old timers used them that way, so whats the harm in keeping it that way. I’ve got a #7 that’s not perfect either, but it still does the job.

-- Julian, Park Forest, IL

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marcb

762 posts in 2340 days


#2 posted 04-10-2009 04:53 PM

I’ve heard of people getting the soles ground or planed in a machine shop, its doable if you want to go that route.

When I lapped my last jointer plane I changed the paper ALOT makes a huge difference in the cutting speed.

Also what abrasive are you using? SiC seems to work best. This is a great low cost/high quality supplier that I buy a lot of paper from: http://barbkat.com/index.html

View PurpLev's profile

PurpLev

8476 posts in 2315 days


#3 posted 04-10-2009 05:16 PM

you might want to use a better abrasive.

mind you though – this is a JOINTER plane, not a smoother – the sole does NOT have to be perfectly flat … think about it – this is a huge sole…. taking that much material is one major project.

as long as you have a somewhat straight line between the toe, throat, and heel – you should be good to go. don’t try to flatten the entire sole perfectly flat, it’s an overkill, and will add no value to this particular plane.

if you do however choose to go that route – I’d consider a belt sander, or stop by a machine shop… I’d rather spend those 4+ hours working on wood, then on metal soles of planes…

-- ㊍ When in doubt - There is no doubt - Go the safer route.

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