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Old 09-04-2012, 06:52 PM
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Default Re: The Great 5 Oil Burnish-off!

That, Okami, is the $64.00 question.

I am fairly sure the Organoil HBO has Citrus Terbene in it, which may assist in setting the oil in the timber. However, from my observations during this test, I have found that the good quality Tung Oils (Liberon and China Wood Oils) seemed to soak into the wood very quickly, bu reached saturation reasonably quickly as well.

I will use the board that I have oiled to test the resistance to heat and moisture and report back. My gut feeling is that all will be fine with the Pure Oils. I have some hesitation regarding the Wattyl Oil as I suspect it contains varnish. (though this may also be of help!).

Regards,

Rob
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Old 04-04-2013, 05:27 PM
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Default Re: The Great 5 Oil Burnish-off!

The question was raised on the Aussie WWF as to whether there was Tung Oil or Boiled Linseed Oil (BLO) in the Wattyl Scandinavian Oil I use for hard burnishing. Since I didn't know and since we were pretty sure there was something else in the mix apart from Mineral Spirit, "Synthetic" oils and some drying agents, I decided to see whether the missing factor could be BLO or Tung Oil. To do this, I ran BLO against the Wattyl product and against Hard Burnishing Oil, which contains Tung Oil and is the reference oil for this method (at least in Australia). The aim was to see if the BLO performed in the same manner as the Tung Oil or not.


So,
I performed the oiling as described above, with one exception. The oils were incubated with the timber for two incubations of 30 minutes each then sanded to 400 grit. Since performing the above evaluation, I have found this method to be satisfactory in producing the desired results.
The pics below detail the procedure as follows:

Pic 1 shows the three oils ready to go behind the highly figured Red Gum board. Three areas have been defined by two strips of masking tape labelled with each oils name and position. The board has been sanded using a Festool ETS150/3 at speed mark 6 with vacuum and using Festool Brilliant or Rubin pads; 80,100,120,150,180,240 and 400 grit.

Pic 2 show the oil applied to give a saturated appearance on each of the oils.

Left is BLO, straight from the bottle.
Centre is Wattyl Teak Oil, straight from the can.
Right is HBO straight from the can.

Pics 3-5 show the appearance of the oils (in the same order as above) after 30 minutes incubation

Pics 6-8 show the timber after the second incubation and sanding and a brisk rub down with a soft cotton cloth.

The sanding regime for wet sanding used the same ETS150/3 with no vacuum and using Festool pads 400, 500,800,1000,1200,1500,2000 and 4000 grit. The pads were either Brilliant (or similar) or Platin 2.

The final picture is to demonstrate the satin finish showing clear grain pattern. No loss of character.

So at the end of the actual oiling and hard burnishing, there is very little to separate the three oils. All give great apparent results. I will perform the functional tests on Saturday morning and post the results on Sat. afternoon. My gut feeling is that it won't matter which oil you use, you'll get a robust satin finish showing great grain differentiation. But BLO is a lot cheaper to buy.

Regards,

Rob
Attached Thumbnails
great-5-oil-burnish-off-400_grit.jpg   great-5-oil-burnish-off-incubation_1_start.jpg   great-5-oil-burnish-off-end_incubation_1_blo.jpg   great-5-oil-burnish-off-end_incubation_1_wattyl.jpg   great-5-oil-burnish-off-end_incubation_1_hbo.jpg  

great-5-oil-burnish-off-end_incubation_2_blo.jpg   great-5-oil-burnish-off-end_incubation_2_wattyl.jpg   great-5-oil-burnish-off-end_incubation_2_hbo.jpg   great-5-oil-burnish-off-reflection_2.jpg  
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Old 04-06-2013, 06:34 AM
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Default Re: The Great 5 Oil Burnish-off!

Today I performed several tests to evaluate BLO, Wattyl Teak Oil and Hard Burnishing Oil, to see if it is possible that the Wattyl product may contain BLO or Tung Oil, or only Tung Oil.
Results suggest that either Tung or BLO may be in the Wattyl product as all three behave in a similar manner.
The test performed were:
1. Pour cold water on the surface and allow to sit for 5 minutes
2. Pour near boiling water on the surface and allow to stand for 5 minutes.
3. Sit a pot of boiling water on top of the surface for 5 minutes
4. Use Spray and Wipe directly onto the surface and wipe off within 45 seconds.

After each test the surface was checked for fading, blistering, warping or any other changes to the pre test condition of the finish.

All three oils behaved exactly the same. No changes were observed after any change in conditions. Therefore I say that Tung Oil or Boiled Linseed Oil could be used to provide a resilient finish to timber.
Bear in mind that 48 hrs is probably a worst case scenario, as it would be more likely that people would give the oil up to 5 days to cure.
This shows the advantage of Hard Burnishing.

All pictures are available if needed.

Regards,

Rob
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