I have a problem

[auscab]

The cabinet scraper will scrape soft polish off . You may mark the top and a little more sanding could be needed.
Steel wool and Blackwood can be a bad mix. So can scrapers and Blackwood usually its if any water gets near the job . The Blackwood reacts and iron oxide stains can occur.

I'm only on my first can of Osmo . There seems there is a lot of rules that you have to stick to .
not sure about shellac and Osmo.
I have been playing with oil based sanding sealer and Osmo and that seems to work. That's good because You cant seem to fill grain with Osmo alone. So a sanding sealer first and finish with Osmo table of mine is almost finished. It'll need a wax to complete it .

Yep dinner sounds good . Just fly me up .

Hope it works out and do post pictures.

[scottbr]

If it turns out to be shellac, I'll try metho and a cabinet scraper and call any marks I make 'added patina'.
I'm near the end of my third 2.5l can of Osmo. I used it on a floor, some chairs I restored, and some nice internal joinery that I made. I like it.
I would be keen to see how your table ends up.
What wax would you put on it?

[auscab]

If it turns out to be shellac, I'll try metho and a cabinet scraper and call any marks I make 'added patina'.
I'm near the end of my third 2.5l can of Osmo. I used it on a floor, some chairs I restored, and some nice internal joinery that I made. I like it.
I would be keen to see how your table ends up.
What wax would you put on it?

The wax I make myself. I get the pure turps in 20 lt drums and have a nice stash of Bees wax and not such a big stash of Carnauba . Its good and I never have to buy small cans of the stuff . I go through a bucket a year I suppose . Sometimes more selling it off to the ladies.

These are tables I make.
Its a similar table to this one but with a four board Oak top .
This is an Oak two board top Login • Instagram
Another top putting a body of shellac on with a rubber.
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[scottbr]

Nice tables, Rob. Good videos, too - you make it look a bit easier than I suspect it is.
I've always found wax tricky. I might to do a bit of research and give it another try one day.

[scottbr]

So Rob, that large middle section of the table just lifts off. It is not attached to anything. The side wings slide under it. Looking at the photo I posted earlier, I can see the top has some cross pieces under it.
If I do this favour and bring the top home and strip and sand it. Is there a chance that with one side untreated for a day or so the whole thing will cup or bow? That would be disappointing for everyone - except perhaps you.

[auscab]

This type of table is called a Draw leaf table table .

What is a Draw Leaf Table - Google SearchYour one has a Mitred top . The top having a mitred frame around it will resist cupping to a point.

With finish on it or raw you can have problems . If its mistreated by letting it sit in direct hot sunlight for to long or next to a heat source the center could cup and or shrink . Gaps will appear in the center panel .The mitred frame will hardly move but the center can on these things .

Or if its placed on moist surface , or is placed in a high humidity situation for to long it will do worse than cup it can expand and pop the mitred corners. If they are just dowled , or biscuit joins they can easy pop open . Nothing will fix it , except drying and waiting for it to shrink , which isnt really fixing it , it'll keep showing up if the glue join is broken . Cutting it apart and re joining it back together is the only way to fix it with good joinery.

One good way of jointing the mitred corners is a tenon and pegs i do that some times Or a better way which I still do is a dovetailed tenon/ Patch inserted from the under side going up into the top . That locks it like nothing else can and Ive never seen one come apart or pop open . A biscuit joined mitred top opens if you sneeze to hard. They don't hold long at all .

These are worst case , like if you forget it and leave it for few hours in the wrong place. The safest thing is to get it into a stable workplace and do the work there . And if its a tin shed that heats and cools like mine , hopeless, then lie it out on a flat table that's larger than it ,and when ever you leave it for the night cover it up with a sheet or planks of flat wood . Or a couple of blankets if you don't have that .

This time of the year isn't to bad for movement problems . Its not so good for finishing if its cold and moist .

[scottbr]

Thanks again, Robert. It will be the weekend after this one when I can do it. I'll bring the middle section home and do it first - being careful in line with your comments above. I'll strip it in my shed, but will leave it in another building overnight - hopefully with one coat of finish on it. I did some tests on different timbers with the OSMO on the weekend applying it with a different technique than previously. I got a much better result.

[scottbr]

Okay, so I got the table top over to my place. The fact that it just lifted off made it easy.
The shellac came off with metho. That was pretty simple.
Then I gave it a sand - up to 320. The plan was to just make it smooth. I was careful to not remove the patina or it would end up very light in color.
It had had 2 coats of OSMO applied very thinly yesterday with a white non-abrasive pad. It will get a third coat tonight. The finish is perfect.
But.... the stains are still there. You will recall that the table owner had spilt a household cleaner on the table. That went through the shellac and then bleached the wood. Next, she put a liberal amount of O'Cedar polish on the bleached patches.
That stained those patches red. I reckon if the O'Cedar had not been applied, I could have colored the bleached patches and got them to match the rest of the table.
I suspect the only way to really fix that top would be to give it a deep sand and then stain it to get a golden color again. That might disguise the patches somewhat, but they will never disappear. I have never had much success with staining, so I would not attempt this.

table 9-6 - 1.jpgtable 9-6 - 2.jpg

[scottbr]

It's one step forward and two steps back. I attacked one of the reddish patches with a cabinet scraper. I reckon I can get about 80% of the colour out. I'll do that to all of them and work out the next step. table 11-6.jpg

[havabeer69]

sounds like it would have been easier to just squirt bleach all over the table randomly and claim it as a feature of the wood...

[scottbr]

So Friday night I got a couple of beers and started with the cabinet scrapers. My thumbs are still sore. It worked - got nearly all the colour out.
Of course, then I ended up with some large areas that were much lighter than the rest of the table. I had some stain in my shed - old baltic (Feast Watson) - and did a test on a similar piece of timber. I managed to get the light patches to match the rest of the table, which surprised me. It doesn't photograph well, but I had a mate over yesterday and explained the whole sage and he could not pick where the stains (and light patches) had been. The table has retained its patina, which was important because it needs to match the extension bits on each end.
The scraped patches are proving tricky to treat with OSMO. It just soaks right in. I did three coats and went looking online for some tips. I read something written by a bloke in the US who has a technique where he applies the OSMO and then gets some wet and dry paper and sands with the grain working it into a slurry. Then he wipes it. I tried that and it seemed to work - must have better filled the pores. I'll put a few more coats on the patches this week and then do the whole table again and try and get some better photos.
table 14-5.jpgtable 14-5 2.jpg

[scottbr]

Finished. And delivered - my future dinner invitations are assured.
It's tricky to photograph. You'll have to take my word for the fact that only people who know there was a disaster would be able to pick the blemishes. The fact that the timber varies (it was made from recycled timber) and there is plenty of retained patina definitely helped.
On the weekend I brought home the extension pieces that sit at the each end to strip and refinish them. They are easy because there were no problems with them. I got the shellac off and sanded at 180 and then 320. Then I vacuumed and applied OSMO very thinly with a white non scratch pad. I did as before and really rubbed it in. I'll do it two more times and then it will be finished.
I learnt a few things, which is good. It's always good to keep learning. Applying OSMO with that non scratch pad and really buffing the first two coats was an especially useful thing to learn. I'll always use that method from now on. It creates a great finish.

table finished.jpg

[Shootrj2003]

Yep, getting the existing finish off is step 1.
Do I need to strip it ans then sand or can I just sand it?
When I get the surface off, I will see how the bleached (and now oiled) patches stand out.
Anyone know what timber it might be? It's not a veneer.
Does it look like it has been stained or would it have perhaps darkened with age?
I will finish with Osmo hardwax oil because I have a can. My dopey friend would be keen for it to look similar to how it is now i.e. not too light in colour.

Chemical strip if the surface is smooth,you can go with the methylene stuff but there are better water based and citrus based items out there now that are safer for you,of course I don’t know what is allowed where you live in ,NY ,USA I can use whatever works for me ,then there’s a minimum of sanding,what is the old finish? Lacquer,oil. Shellac? Once the finish is off you might try to even the color by bleaching the whole top then stain to your desired color.if the defect color won’t bleach out then sanding is a neccesity.
By the way I’m new here everyone and from NY.....sorry!

[auscab]

By the way I’m new here everyone and from NY.....sorry!

Ha ha , No probs . Nice to see you hear .