Gister heb ik een uitgebreide discussie met de ChatGPT gevoerd over het maken van vernis en het afwerken van een stoel. Je moet best wat achtergrond kennis hebben om de AI zinvol in te kunnen zetten. Kennis die ik op dit vlak maar matig heb. De hele discussie is 1800 regels lang en bij interesse kan ik die hier plaatsen. Uiteindelijk kwmaen 'we' tot het volgende:
EDIT: Een andere discussie die 'we' hadden ging over de zoetschaaf. Hoe kan die geoptimaliseerd worden. Mijn basis vraag ging over de bedhoek gecombineerd met de te schaven houtsoort en vervolgens over het gebruik van een schuin afgeslepen beitel. Conlusie, een "skewed (10-20°) blade smoothing plane with a 50° frog angle" zou optimaal zijn voor warrig eiken.
Waar het in de discussie vooral steeds fout ging is dat er stappen in de verschillende processen om een vernis werden overgeslagen. Een aantal harsen hebben warmte nodig om ze in de vernis te krijgen. Dat werd vergeten. Ook bij de vraag naar een impregneer werd in eerste instantie een olie en was gebaseerde impregneer voorgesteld. Daarop kun je echter amper een vernislaag zetten. Doorvragen en achtergrond kennis helpen, maar bij voldoende kennis van de materie voegt de AI m.i voor dit soort dingen niet veel toe. Het kan wel een mooi beginpunt zijn om mee de literatuur in te duiken.User:
Lets go back to the finish of a chair. I'd like it to be anti slip so added sand to the final varnish. There are still some question marks ?? Could you fill these in?
1. ?? layers impregnant
2. three layers of milk paint
3. three layers of shellack
4. three layers of damar, shellack varnish
impregnant ingredients:
?? grams Shellac flakes
?? milliliters Denatured alcohol (or ethanol)
?? grams Gum arabic
?? milliliters Water
varnish ingredients:
20 grams damar resin
200 milliliters ethanol (denatured alcohol)
20 grams shellac flakes
100 milliliters walnut oil (or any other drying oil of your choice)
?? grams of very fine sand
ChatGPT:
Certainly! Here's a revised version of the finish procedure for a chair with an anti-slip varnish containing sand:
Impregnant:
Apply 1-2 layers of impregnant to the prepared wood surface using a brush, cloth, or sponge, working it into the wood grain. Allow each layer to dry before applying the next.
Impregnant ingredients:
50 grams Shellac flakes
500 milliliters Denatured alcohol (or ethanol)
50 grams Gum arabic
250 milliliters Water
Instructions:
In a container, dissolve shellac flakes in denatured alcohol. Use a ratio of approximately 1 part shellac flakes to 8 parts denatured alcohol. Stir well until the shellac flakes are fully dissolved. This will create a shellac solution.
In a separate container, mix gum arabic with water. Use a ratio of approximately 1 part gum arabic to 4 parts water. Stir well until the gum arabic is fully dissolved. This will create a gum arabic solution.
Combine the shellac solution and gum arabic solution together. Stir well to ensure they are thoroughly mixed.
Optionally, you can add a small amount of an antimicrobial agent, such as thymol, to inhibit the growth of mold or bacteria. Follow the manufacturer's instructions for the appropriate amount to add.
Apply the impregnant to the wood surface using a brush, cloth, or sponge, working it into the wood grain. Ensure an even and thorough application, covering the entire surface.
Let the impregnant penetrate and dry on the wood surface. The drying time may vary depending on the environmental conditions and the thickness of the applied layer. It's recommended to allow sufficient time for the impregnant to fully dry and cure before applying any additional finishes or treatments.
This non-oil impregnant based on shellac and gum arabic provides a compatible layer that can be easily coated with various top finishing layers, such as varnishes, lacquers, or paints. It helps to seal and protect the wood while allowing subsequent finishes to adhere properly. As always, it's a good idea to test the impregnant on a small, inconspicuous area or a sample piece before applying it to your entire project to ensure compatibility and the desired results.
Milk Paint:
Apply three layers of milk paint, allowing each layer to dry before applying the next. Follow the instructions provided with the milk paint for application and drying times.
Shellac:
Apply three layers of shellac to the milk-painted surface, allowing each layer to dry before applying the next. Shellac can be applied using a brush, pad, or spray method. Sand lightly between coats for better adhesion.
Damar-Shellac Varnish with Sand:
Prepare the varnish mixture by combining the following ingredients in a container:
20 grams damar resin
200 milliliters ethanol (denatured alcohol)
20 grams shellac flakes
100 milliliters walnut oil (or any other drying oil of your choice)
50 grams of very fine sand (adjust amount as desired for desired anti-slip effect)
Heat the mixture in a double boiler or a heat-safe container in a pot of simmering water until the resins are fully dissolved and the mixture is homogeneous.
Allow the varnish mixture to cool slightly but remain in a liquid state for application.
Apply three layers of the damar-shellac varnish with sand to the shellacked surface, allowing each layer to dry before applying the next. Use a brush, cloth, or sponge to apply the varnish, working it into the wood grain.
Optional: Sand lightly between coats for a smoother finish, if desired.
Let the final varnish layer dry and cure fully according to the manufacturer's instructions or recommended drying times.
Please note that the specific quantities of impregnant and varnish ingredients provided are approximate and may need adjustment based on the size of your project and desired consistency. It's always a good idea to test the impregnant and varnish on a small, inconspicuous area or a sample piece before applying them to the entire chair to ensure compatibility and achieve the desired results.
EDIT: Een andere discussie die 'we' hadden ging over de zoetschaaf. Hoe kan die geoptimaliseerd worden. Mijn basis vraag ging over de bedhoek gecombineerd met de te schaven houtsoort en vervolgens over het gebruik van een schuin afgeslepen beitel. Conlusie, een "skewed (10-20°) blade smoothing plane with a 50° frog angle" zou optimaal zijn voor warrig eiken.
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