Thompson Surface Grinder Restoration: Scraping the Front Way to a Master Straight Edge

[@paulputnam2305]

Great Job. That power scraper is “The Cats Meow” thanks for sharing this very informative video with us.

[@rtertertrryyty]

Longer videos please I'm a disabled veteran and like your videos very much.

[@CothranMike]

I guess you have run through his backstock, the hundreds of hours he has alreadg published? There is a lot of long manual machine channels - other here will be glad to recommend.

[@bulletproofpepper2]

At my work equipment goes down and needs a little more then just maintenance to get it back up and running. I tell my bosses I can break it any worse then it is, it’s already broken. We had a bearing lock up with borrowed piece of equipment in a remote location. We had our client ready to ship it back to the maintenance shop and the maintenance shop cancelled the shipment and asked to ship the repair parts to location because we have the most experienced people here. It took a little rigging but we got the old parts out and the new parts in. We also performed three ten hour run in sections running with new oil and filters. Later it was recovered that that the unit had been stuck by lighting at it’s old location, Before we got it and it was repainted. Thanks for sharing. Watching you and others on KZbin have taught me tips and tricks to look for in repairs. Thanks for sharing.

[@ot9180]

Wow, you lost so many pounds. Looking good. Congratulations.

[@IanM-m4h]

Good job Keith. I’m glad you got your scraper back in one piece.

[@thisolesignguy2733]

Nicely done! I think that's the best scraping I've seen yet, except for the horizontal boring mill that was amazing because the entire machine was scraped in together from scratch. I still go back rewatch those videos, they're just really enjoyable

[@JFirn86Q]

Excited to see the next process with scraping the table. Looks beautiful!

[@peterhobson3262]

Thanks for explaining why scraping is important.

[@davedunn4285]

A beautiful way to get a straight edge Thankyou Keith

[@jeffreysmith5018]

The patience you have for chasing this level of perfection is extraordinary! Well done!

[@sheph7]

I cannot count the number of times I thought, "I can't make it worse only better"? Then hours/days/months later gave up. I'm always impressed at skill and what Keith can accomplish.

[@dalecarpenter8381]

Buddy I don’t know how to say it but you have become a shadow of your former self keep up the good work and I’ll continue to enjoy your content Thanks Keith!!!

[@transmundanium]

I love these kind of things where you get such perfectly imprecise surfaces, making them perfectly precise.

[@williamdavis7094]

Thank you you patience with your machines is unbelievable thank you

[@RDBuilt-ev6oy]

I've spent weeks scraping ways, 25yrs ago. Always enjoyed it.

[@eastcoastwatch672]

Hey slim, can’t believe how big your favorite T-shirt fits on you now, keep up the good work, looking good 👍

[@melshea2276]

Happy Friday Georgia!😊

[@charlieromeo7663]

Nice work, I can’t get enough scraping!

[@tboneman48]

You are a true craftsman sir

[@izzynutz2000]

Good morning Keith

[@kimber1958]

Nicely done Keith, Thanks for sharing

[@bobtopper7867]

You are a highly skilled tool maker my friend

[@workaholic5318]

Your shop your rules and am waiting for the content and thank you.

[@sonnymoorehouse1941]

Great videos. Thank You for making and Sharing them !!!!!!

[@walterplummer3808]

Looking great! Thanks for the videos.

[@jonareli]

Precisely done Keith 🎉

[@kevincampbell1975]

"I never met a machine that didn't need scraping..." - Keith Rucker

[@johanea]

A drill, bandsaw, sanders, welders and so on and so on.

[@Digital-Dan]

Scrapers gotta scrape, I guess. More power to ya.

[@floridaflywheelersantiquee7578]

Thanks for sharing Keith

[@petegraham1458]

Nice work , that’s a beautiful scraping job ! I hope the V ways aren’t too difficult to access to get them scraped in .

[@Me11oIngenuity]

Looking mighty svelte Keith! Your efforts are paying off. Thanks for the scraping video.

[@georgelawton9075]

That’s over and above 😅 nice job 😊

[@Tammy-un3ql]

Nice work

[@patrickmazzone9066]

Excellent job nice work Happy Holidays

[@timf6916]

Good job

[@jrmintz1]

Fascinating

[@6NBERLS]

Most excellent.

[@bcbloc02]

My Thompson has pressure lube to the ways. It really runs on a film of oil. If it sits long enough it settles down and sticks. Just bump it and the oil floats the table back up and it is smooth as silk.

[@djscrews]

We, The Nerds thank you! Great video.

[@johnwilcox4078]

The power scraper is a useful tool in the right hands, it's faster than hand scraping and takes less effort. And Keith is an accomplished scraper, especially with that Viax power scraper. Have a good look folks, it really takes a long time to get this good. That being said, the finished appearance of the power scraper is not as good as what can be done by hand. We always finished the last several passes by hand, using a narrow blade and short strokes; pinpointing. Each scraper had his own signature look, we could tell who scraped a piece by i'ts appearance.

[@CatNolara]

Scraping is always so satisfying to watch How are you going to scrape the V on the table? My thought was to build a simple wooden fixture so you can put it up at 45 degrees and then put the straight edge on one side of the V and scrape it, then flip the table around and repeat on the second side.

[@CothranMike]

That is what he has done in the past but i would not be surprised if he comes at this table from a different perspective.

[@johnpope4464]

Doing it now makes sure it right

[@oldschool1993]

Keith's Christmas tree- Viewers open their package and hooray- another scraping video!

[@DavidSellars-b8l]

Hello Keith, The force needed to move an object is a function of the weight times a coefficient of friction for those two surfaces. Surface area is not a factor. The high spots and wear aren't what is in play here. The table weight is not significantly changed but you are altering the coefficient of friction between the surfaces by introducing a lubricant and the ability of the surfaces to hold a film of lubricant between them. dave

[@azarellediaz4892]

Cool!

[@stanwhyte7028]

Hi Keith, I’ve been in the bowels of several surface grinders. Never seen one without lubrication wells in the base ways. When you get around to next video can you go over how table ways get oil supply?

[@edsmachine93]

Nice work Keith. Something satisfying about watching and seeing the scraping process. The grinder is certainly going to be nice. Thanks for sharing. 👍 Have a great week.

[@johndebrular979]

Yesterday I watched Jimmy Diresta vuild a pool table. Now I can see how the bandsaw will be used.

[@eastcoastwatch672]

OUCH, nailed the wrong nail on that ring finger, I feel your pain, been there done that!

[@tomswindler64]

Nice 👍👍👍😎😎😎

[@Bob_Adkins]

In theory, 2 larger solid flat surfaces will wear longer than 2 patterned flat surfaces. The reason is, more surface area equates to lower PSI at the contact areas. Lubrication is another matter, there are too many variables to say whether lubrication always makes up for higher pressure contact areas.

[@dalexanderw]

It's looking great!

[@andrewcrawley7384]

The flanks are the reference in this casting and those flanks are trueable to the single surface. The concept im talking about is in 3 directions of movement and the flanks control 2 directions and thats all you need for a plane and so a tool that rolls in the flanks and moves across that surface does control the grinding of the surface when the pressure is applied square Is rigid lapping 😅

[@levitated-pit]

UK here! the company i work for have some wonderful old school lathes, horizontal borers, milling machines, etc but im not allowed to use them or repair/service them due to health and safety laws.(not having safety guards etc) im 63 yrs old and time served on them and it seems like an awful waste. i will be retiring soon and i whish i had the space to take some of them in

[@johanea]

Those damn laws are totally useless. Same here, not UK perhaps, but them damn machines are unusable due to all guards, shields, screens, barriers and on some, fences. The idiots making up those laws have clearly never ever touched any machine of any kind.

[@ianrobinson2184]

Sounds cool. I am always buying up old stuff and finding it a home. Also in the uk. What does your place have?

[@johnmcdyer7297]

Watch out

[@sonnymoorehouse1941]

Fascinating !!!!! so power scraper has carbide chisel ? with reciprocal motion ? Can you talk about scraping ? and Manuel scraping ?

[@alstonofalltrades3142]

You're in luck he's already got videos for this, use the search inside this channel for "Richard King scraping class" and you will get the results. Or just search scraping for other machines keith has rebuilt.

[@sonnymoorehouse1941]

@@joenicotera2991 If my comment was rude id expect your response.

[@emmajacobs5575]

Keith has a playlist of scraping videos which will tell you pretty much all might want to know

[@RambozoClown]

I'll expect a five block test of 10 millionths or better!

[@kylebracht]

I found a 36" Challenge a few months ago. I wish I could find more information on it

[@wallbawden5511]

nice work Keith shame you keep repeating what your doing now days as it only takes 5 minutes to watch any of your videos now it's a shame but thank full for the fast for would button Cheers till the next one

[@ellieprice363]

There’s still some viewers that need to hear the steps repeated over and over to fully understand the process. Keith is a great teacher and I appreciate his patience.

[@alstonofalltrades3142]

Aye new viewers subscribing all the time. And the cleverest at any subject may get A's all the time but they don't get close to 100% all the time... Always gaps in our learning no matter our level. @@ellieprice363

[@barry7391]

Hey Keith, what happened to your shorts?! Gettin' a little chilly down south no doubt. Up here in NJ I'm still wearing shorts, probably into mid January before I put on the ankle length shorts, haha! Keep up the good work, I really enjoy your channel.

[@markharrison9622]

Keith, I worked with a grinder exactly like yours. Just FYI, under the table was awesome (like yours) but where we had major problems with ours was in the vertical ways and the cross feed for the wheel head. Apparently there were two different options for these grinders, one was with a bronze bushing in the wheel head or two carrier bearings. The bronze bushing is really hard to work with, to much clearance, not good, to much oil, not good, and vise versa, or a combination of either. Plus it's hard to find 14 inch wheels with a 5 inch bore. I tried everything I could to fix it I still think it was between the bushing and the wheel head cross feed. Good luck, I certainly hope you don't have the bushing. I'll be watching, thanks.

[@markharrison9622]

@@joenicotera2991 I was talking about the Thompson grinder....

[@markharrison9622]

@@joenicotera2991 the grinder I operated had a magnetic chuck. The upper structure of the grinder was bolted (if I remember correctly) to the base(table ways and coolant reservoir) and the drive motor and wheel head are all on the same shaft. But, the wheel head and motor are on a set of gibs perpendicular to the table (chuck). In that casting of the motor and wheel head was (in our case) a bronze bushing. Looking at the technical manual, you could order it with either double bearings or a bushing. I personally think that the gibs on the wheel head where (and probably still) worn out, so as the wheel head traverses out across the chuck it would not be flat and because of the excess clearance in the bushing, the wheel would rise up and over the work piece. In effect, just walk right over it, in both directions. This would not give consistent finishes and inconsistent thickness on the finished part. I hope I explained myself better...😁

[@ErikBongers]

Curious to see how everything is parallel but given that the first surface only took a few passes, it looks like it's not going to be too bad. I'm wondering why the V-groove is downward, like a valley. Wouldn't that accumulate all the dust and chips?

[@charlesblanton1008]

Hadn't thought about the v-way collecting debris issue you mentioned, but a very good point. I too was wondering to what extent scraping (thereby lowering the v-way) would affect the angle of contact on the front flat way. If an extreme amount were removed from v-way it would obviously be an issue. But as you mentioned, If just taking tenths off of things, I assume the effect is negligible on the flat way. I would imagine, if you wanted to get truly finicky, you could blue up both surfaces under the table after the v-way is done and see what everything looks like and touch up accordingly.

[@aleksandarvasilevski7410]

I remember one video with autocolimator and v shaped sliding part on which mirror sits. Isn't autocolimator good tool for checking v slides on grinder or something happened to that autocolimator?

[@markedis5902]

Don’t fix it if it ain’t broke

[@GuardianFilmworks]

Where do you find those powered scapers for sale or even the hand scrapers?

[@alstonofalltrades3142]

There's a very good reason I wouldn't scrape that surface grinder.. And the reason is I have never done any scraping ever! Soon as my kitchen is finished I'm going to cut up and weld some old RSJ into 3 surface plates a foot square each and give this scraping ago. Sure hope I'm cut out for it as then I can make my own mini lathe to make miniature engines and all sorts. See if this hobby can be done on a trim budget.

[@bernardwill7196]

Little bit early but, I wish Merry Christmas to you and your family.

[@robertbamford8266]

Where does ensuring the pairs of ways are coplanar and that the table winds up in a plane perpendicular to the cutter?

[@bcbloc02]

I thought you had measured the ways at less than .0002” out? That seems like an aweful lot of scraping to only correct an error half a scrape marks depth??

[@emilgabor88]

This is the easy part to scrape it flat but how do you verify that is 90° to the ways on both axis? If not, it will still work as flatness grinder, but on side wheeling you will get a concave surface .

[@kevinreardon2558]

We Humans are pretty smart.

[@charlesemmer8856]

Wasn't "red lead" used along with bluing when scrapping in ways for higher contrast at one time?

[@WhatAboutTheBee]

Would someone mind explaining how Keith knows the way he just scraped is PARALLEL to the main axis of 90° Vee way in the back?

[@claygormish4884]

He has a special too from Mr. King that has level bubbles. Look up Kingscraping for more info. He has a class and a video on scraping machine rebuilding.

[@aaronbaird3533]

If Thompson thought it fit to run on ground ways...

[@fabioth283]

You can use just Biax scraper for cut highspot.but you dont know well to use hand scraper and how to scraping.its nice for do video

[@warrenjones744]

That's a lot of straight edge to be manhandling Kieth. I have a 6 footer than is more than I care to lift anymore. I use a hoist when I need it.

[@mudnducs]

Holy smoke Keith….you’re gettin skinny! Congrats!!

[@rayfisher2160]

Did you also scrape your head - that's not funny, Ray

[@JaapGrootveld]

He knows deep down that he is not a precision machinist, and that is why he apologizes to his audience when he scrapes. He's good with steam engines. We hold our hearts when he starts working on such a beautiful machine.

[@ellieprice363]

Sour grapes. Where is your channel? Show us how you would do it better than Keith.

[@JaapGrootveld]

Well first of al I would not bang my straight edge all over the place. @@ellieprice363

[@Hoaxer51]

@@ellieprice363, Some of these people only know how to complain, they add nothing to this content.

[@grntitan1]

@@JaapGrootveldYou don’t even have a straight edge. So no, I guess you wouldn’t.

[@JaapGrootveld]

The way Keith handels straitght edges there wil be not many left soon :-)@@grntitan1

[@JohnDoe-es5xh]

Scraping that grinder? Nothing for me. I'm out.

[@MickHealey]

Bye.

[@paulcopeland9035]

You won't be missed!!

[@JohnDoe-es5xh]

@@paulcopeland9035 Is there something like a scrapomanie? 60 or more years survided this poor machine, but now comes an old man, who is horny to swing his cutting stick. I dont get it.

[@wesleymonske8103]

Looks really good. For sure a positive improvement .will you put in a oil channel?