M

Steven Mayhew - I helped with a restoration of a friends house. There was some flaw in the original engineering/construction cause 60 years later, the house was leaning towards his neighbors house at an angle the measured about 7/8” over 4’. We had to replace 32” doors with 30” doors and still couldn’t get them completely plumb in the rough opening. I don’t know what the place looks like now but if that house is now supported by the neighbors house, it wouldn’t surprise me.

at 6:20 kzfaq.info/get/bejne/n9WAlNWdmMDHY6s.html

I agree it feels like it makes a difference, the real key is to strengthen your core, that's the way to help yourself with back issues. It's not always easy and not possible for some though.

Or a "leanin' post you can plant your chest and belly against. Slip a 2 x 6 about 6 ft long down into the bed when youre scraping on the far way. Block it as you need to adjust the angle. Move it from bay to bay as you scrape. Whatever weight the post is taking is that much less strain on your back. Trust me, I've been there. Having something to lean your chest against might make the difference between living a normal life and funding a college education for your chiroprator's kids. The Biax weighs 10 lb or so perfect for screwing up your back. One trick I've found very effective is a spring tool suspension to carry the weight of the Biax. No need to get fancy. I use a $4 screen door spring I bought at Lowes back when. Knot a string sling about 18" long. Basket hitch it around the Biax at the balance point so it hangs naturally at your preferred angle. Hang the basket hitch from the spring and the spring from the crane hook you have right there. If re-rigging the crane and moving the crane back and forth is a PITA, hang the tool from a trolley running in a length of garage door track way up in the rafters.

And you probably had to scrape by hand. I don't think you had a power scraper like Keith's.

@@danielcobbins9050 no, it wasn't that. The three surfaces on a #4 are. ..the machine base, steady rest plate, and regulating wheel. All sandwiched. So... Only about 3x3. He showed me how to neg rake the blade and curve. And flex the tool while you flake. A couple of passes and he had great coverage. Float finished....and this was before he scraped the bearing ! Good stuff ... I'm still and ass for not being totally there.

@@danielcobbins9050 sorry dude. I was going to answer before you lossed me on that trip down memory lane. ....my point: yes we had power scrapers and no: this old fart was OLD SCHOOL, and he knew it. And I didn't. Yo.

@chris0tube Keith has never claimed to be a professional scraper, machining is just a hobby of his, I think he's doing a great job so far and will have this planer working better than it did when new, and have tighter tolerances than new, could it be better? Sure, but this is a hobby, it's also a learning project, what better way to learn and improve than to do it? There is none.

Need diamond wheels, but yes he could. Probably has too many projects so he just buys them. Along with helping the community

He checked things out with the autocollimator.

I think it's just a matter of him trusting that the grind job he had done on the table is flat and parallel. As long as that's the case, fitting one surface to the other is perfectly acceptable. On ways that long, he's already well within normal tolerances for something like this, as he already verified with the auto-colimeter. He's going above and beyond doing this level of fitting.

@@siggyincr7447 That is true enough. He could easily have gotten away with simply flaking it for oil retention, and still have it better than original.

@@aserta Has he done the top which he is using as the 'master' Ive only watched him check the base with his autocolimator !

I also think that only the base was checked in the previous video. I’m not sure if Keith checked the table, but I think maybe he didn’t have to? As far as I remember the top was ground first and then the v-ways, thus the setup in the grinder was pretty solid.

51ubetcha, he said he was only going to be removing a thousandths or two. That small amount shouldn’t interfere with the bull gear and the rack.

You are correct Tim, but how much was removed when the ways were ground. Also I don't know how much clearance as they between the bull gear and table rack to start with.

51ubetcha, Keith has said in earlier videos that they had ground the same amount off where the rack mounts on the table as they had ground off the ways. It should all line up correctly if they took the same amount off both the ways and the bottom of the table where the track mounts. He actually has the track mounted in this video, so if there is going to be an issue, it should show up right now. This has been a good video series, I know I’ve enjoyed it!

@@Hoaxer51 Thanks for info. I have been watching the series,but I must have missed the part where Keith stated the removal of metal for the rack mount.

51ubetcha, I think he said it when they were at the machine shop that did the grinding. It’s been awhile ago, so I’m not sure which video it actually was. It has been a good series, I’ve enjoyed it also!

Those are mostly really big flakes compared to grinding dust. There also isn't an air flow like there is around a grinding wheel. Most of the stuff will stay within a couple of inches of where it started, and the rest is going to fall pretty much straight down.

You never fix it like that, you braze them.

@@aserta surely that depends on whether it is structural or cosmetic. I wouldn't risk heat distortion for the cosmetic repair . Ideally the best way for structural repairs would be spray welding, less heat input and a closer colour match, but go for brazing if that's all you got.

aserta, I’m curious, why shouldn’t you use that for a peck hole or a blemish? It sounds like a good idea.

No. The process of scraping creates peaks and valleys where the valleys serve as the channel to carry lubrication. If you cut the amount of scraped surfaces in half, you also cut the amount of lubrication in half, and you increase the rate of wear. The surface tension of the lubrication itself keeps the lubrication from falling off the scraped surface (the sliding table in this example).

The Dykem works ok with lower contact pressures but nothing beats the old lead.

You mean the bottom monting surfaces?

@@zHxIxPxPxIxEz Yes.

@@petemclinc the grind job should be accurate enough for distortion free clamping

There always is, not likely very much in this case

Brian, he does it at about 14:15

@@patwicker1358 He said he stoned them and cleaned them up. Didn't say he printed them with a straight edge. Maybe decided the ground finish with te table fully supported on Cash's grinder was going to be flatter than what they could produce upside down on saw horses in the shop?

@@bcbloc02 I understand, I mis-read your comment.

@@bcbloc02 Hey Brian. He said he we will print the base with the table, then the table to the base. IMO, the table flexes a lot more than the base, but I haven't done the math to see if it's significant.

@@TheMetalButcher Sounds like a dangerous gamble. With my luck I would wind up scraping a pair of matching curves instead of flat parallel surfaces. lol Of course maybe he plans to check between scrapings with the autocollimator and bring it in using those measurements as another piece to the puzzle.

I think it has to do with how well it was ground, we're already at the final matching and adjustment phase. He's considering the table good enough to use as a master, and the double V design means he has to do that at some point anyway.

*wring

Actually the scraping gives air a way to get between the parts and eliminates the possibility of wringing like very smooth gage blocks do.

@@kensherwin4544 I believe Alex is talking about the beginning when Keith was talking about the ground surface.

@@xenonram i was thanks

win the can full of swarf.....

Terminal Insanity. He has already checked the straightness, "levelness" with the autocollimator in a previous video.

@@stumccabe he checked the female half (the planer bed) with the autocollimator, not the male half (the table).

@chris0tube If they hadn't already precision ground it, I'd agree. But keeping in mind this is an 1800's planer not a Moore jig bore, he's ok.