I'm going to bring this thread back down to earth now...
I've read the record guide to planing (many thanks to
@mrpercysnodgrass ), watched some vidoes linked to here and read the posts. Enjoyed the Japanese film showing the effect of altering the cap iron on tareout - that was new information for me.
I've made some progress over the last couple of days. First of all my number 4 plane iron is buggered, the top section that extends beyond the frog is bent forwards which means it isn't flat and the left had side of the blade is very slightly twised up on one side. I'm going to buy a new blade and start again.
The 4.5 seems in good shape and just needs sharpening.
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The 5-1/2 which I like the feel and weight of needed sharpening which I have done. I kept the iron as straight as possible in the honing guide and got a good edge that easily removes hairs from my arm. I also did what Paul Sellers suggested and used a pen to mark the sole prior to rubbing over sand plaper to get it flat, it is flat and smooth.
Pic of iron. Far from perfect, but notably better than I'd managed before.
(after doing a load of work, and it is still sharp).
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I have had this peice of Sipo for a while, but not wanted to attempt to squre it up incase I got it wrong.
It had band saw marks on all 4 sides and 2 were not square. (Pic taken part way through the work)
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I was able to take very fine shaving with the 5.5 plane, it sounded very smooth as it was cutting too. Perhaps this is an easy wood to plane? I guess it is, more or less no tare out in either direction.
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I checked it with sqaures, a long ruler and on my very flat bench top (not pictured) mulitpule times. It is now as square all round as I can get it.
However I am having problems getting a square edge on some 18mm thick maple.
These 2 pictures sum the problem up, I can't get it flat, I keep swaping the the error from one side to the other.
Not sure what I am doing wrong, will keep practicing.
Should I use a smaller plane for this job? Or perhaps a shooting board?
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