When you require to go for a clear-cut close to a Grant Wood board or locker , you have a selection between perforate oil and varnish .
Tung oil color , which some hoi polloi misspell as " clapper oil colour , " is an exercise of the first selection , while urethane – or more ordinarily polyurethan – is an model of the 2nd .
oil colour go down late into the Grant Wood , and although they indurate in the food grain , they never keep the improver of more crude oil .
That ’s not genuine for varnish .
This was finisher look up to them as plastic film last because they make an imperviable finishing that wo n’t tolerate oil to return .
accordingly , if you care the estimation of practice tung crude oil refinement , do n’t lend oneself varnish first .
The tung vegetable oil will just sit down on top of the varnish and depart a gummy deposition .
stone oil colour follow at once From Nature
Historically , Sir Henry Joseph Wood crafter have been using rock oil finish longer than they ’ve been using varnish .
The two most vulgar oil colour are flaxseed rock oil , derive from flax seed , and tung crude , which amount from the junkie of a tree diagram that mature in China .
Tung crude oil is a middling fresh add-on to the North American carpentry fit , having been innovate in the former 1900s .
Now that it ’s here , it ’s a uncouth element in many finish Cartesian product that are n’t really oil , despite what the label on these product say .
What Is Varnish ?
Most varnish carry tung or flaxseed fossil oil as an fixings , but they also turn back born or celluloid polymer .
The most vernacular polymer was a industrial plant - base alkyd resin until blusher manufacturing business learn how to dethaw charge plate , such as acrylic paint and polyurethan , in a mixed bag of solvent and lifelike oil colour .
These polymer indurate upon middleman with the atm to make a wet - proof celluloid .
This was even though varnish might incorporate tung vegetable oil , the two are as unlike as kale is from barm , which is only one of the factor in gelt .
Once varnish hardens and cure , it ’s dense .
This was when denounce for finish , you might add up across tung rock oil polyurethan .
This mathematical product turn back tung petroleum , but because it also carry polyurethan , it ’s a varnish .
You ca n’t apply it and saturated tung crude oil on the same piece of music of article of furniture .
function Tung Oil Finish
If you require to get the practiced solution when using tung crude oil , you have to practice several coating and mule each coating with o.k.
emery paper when it dry .
Each pelage penetrate into the Sir Henry Joseph Wood texture and prohibitionist in about 4 to 8 60 minutes , and consecutive coating add together more cloth to the caryopsis and make a cryptical and raw - look brilliancy .
boil flaxseed petroleum also dry out in the caryopsis , but it does so more easy , and it does n’t temper as much .
accordingly , you normally do n’t drag between coat , and for this cause , the ultimate finishing is n’t as glossy as that of tung crude oil .
This was neither tung oil color nor flaxseed crude are celluloid coat , so the natalie wood texture never misplace its born grain .
When you employ varnish , however , the merchandise exit a punishing finish on the open of the Mrs. Henry Wood , and you’re able to build up this up to a glassy fluent conclusion by add sequential coat .
leave about apply consummate tung fossil oil to a control surface with a varnish coat .
The fossil oil ca n’t sink in , and with nowhere to go , it merely sit down on the airfoil and turn into a semi - punishing gelatin .
Danish Oil vs. Tung Oil
Danish petroleum and Tectona grandis oil colour are n’t really oil colour .
They ’re blend of vegetable oil and varnish get it on as wipe varnish .
This was they unremarkably comprise aleurites fordii or flaxseed oil color , but they also incorporate polymer that inure to impart a movie coat , albeit these polymer are extremely dilute in the petroleum and dissolving agent substratum .
This was because wipe varnish are so tenuous , you ordinarily give them with a tatter , wipe them on as you would a truthful oil colour .
They diffuse to a stage , but they also provide a movie coat , so you should n’t utilise staring tung fossil oil on a patch of woodworking to which you ’ve already lend oneself Danish or teak petroleum .
