Carlos Mello is the founder and head designer of MainGUILTY, a Portuguese design studio that sits at the intersection of product design and art. With a background deeply rooted in industrial craftsmanship, Mello focuses on transforming raw materials—particularly cork, wood, and metal—into functional collectibles. His creative process, often driven by his "UnderPressure" methodology, prioritizes experimental textures and organic forms. He frequently utilizes upcycling techniques to repurpose industrial byproducts, ensuring that his furniture and sculptural pieces maintain a distinct, tactile quality suitable for curated interiors.
Mello’s work has recently gained visibility through significant international and public projects. He was selected to represent Portuguese design at Expo 2025 Osaka with his "Wave of Connections" installation, a project emphasizing sustainable material use and cultural heritage. His portfolio also includes public sculpture, such as the commemorative piece commissioned for AEMinho in Ponte de Lima. An active participant in the European design circuit, Mello has exhibited at major trade shows like Decorex London and was recently recognized with the "Entrepreneurial Generation" award at the Mobis Gala.
Fluid Sculptural Organic Bookcase by MainGUILTY Champagne color
By Carlos Mello
Located in Freamunde, PT
The Fluid Sculptural Bookcase by MainGUILTY is a contemporary luxury bookcase that embodies movement, adaptability, and artistic expression. Conceived as functional art, this modern ...
Iron
Emerald Sideboard Handmade Sculptural Luxury Sideboard by MainGUILTY
By Carlos Mello
Located in Freamunde, PT
The Emerald Sideboard by MainGUILTY is a sculptural statement of contemporary luxury design, inspired by the emerald gemstone—an enduring symbol of prosperity, renewal, protection, a...
Copper
Vesuvio Sculptural Sideboard by MainGUILTY – Walnut & Gold Leaf Luxury Storage
By Carlos Mello
Located in Freamunde, PT
The Vesuvio Sideboard is a handcrafted luxury sculptural sideboard that merges powerful historical narrative with refined contemporary design. Inspired by the dramatic eruption of Mo...
Gold Leaf
Sculpture Venom Sideboard by MainGUILTY - Handcrafted w/ Premium Walnut Root
By Carlos Mello
Located in Freamunde, PT
This modern sideboard is entirely handcrafted by skilled artisans in Portugal, combining contemporary design, artisanal expertise, and high-quality manufacturing standards. The piece...
Copper
Sculpture Venom Cabinet by MainGUILTY - Handcrafted w/ Premium Walnut Root
By Carlos Mello
Located in Freamunde, PT
The Venom Cabinet is a sculptural luxury storage piece that translates cosmic imagination into refined contemporary design. Inspired by the hypothetical discovery of a comet teeming ...
Copper
$30,659
H 31.5 in W 86.62 in D 21.66 in
Contemporary Sistelo Sideboard, Oak Root, Brass, Handmade Portugal by Greenapple
By Greenapple
Located in Lisboa, PT
Sistelo Contemporary Sideboard, Contemporary Collection, Handcrafted in Portugal - Europe by Greenapple. The Sistelo sideboard draws inspiration from the terraced landscapes of the ...
Brass, Stainless Steel
$3,773Sale Price|20% Off
H 38.98 in W 66.93 in D 21.26 in
Art Deco Walnut Root Goatskin and Brass Italian Sideboard, 1940
Located in Roma, Lazio
Beautiful bar cabinet in characteristic Italian style by Paolo Buffa, Vittorio Dassi and Osvaldo Borsani. This bar cabinet has a very luxurious look, due to the use of uncommon mater...
Brass
$2,476Sale Price|28% Off
H 77.96 in W 47.25 in D 13.78 in
Sculptural Olive Wood Freestanding Bookcase Room Divider, Late 20th Century
Located in London, GB
Solid olive wood free unit is very versatile. The composition is in a-symmetrical sections. It can be free standing as a room divider as well as a open cabinet against the wall for b...
Olive
Conscience Green Marble Bookcase
Located in Antwerp, BE
A sculptural solid marble bookcase handcrafted from rare Verde Tinos marble, where asymmetrical shelving transforms books and treasured objects into an ever-evolving composition. De...
Verde Antico Marble
$11,792Sale Price|20% Off
H 36.23 in W 88.98 in D 18.9 in
Italian Art Deco Lacquer, Walnut and Gold Leaf Sideboard attr. Borsani, 1950s
By Osvaldo Borsani
Located in Meda, MB
Elegant Italian sideboard from the 1950s, attributed to Osvaldo Borsani. The structure is fully finished in glossy black lacquer, with fluted walnut doors that add rhythm and depth t...
Brass, Gold Leaf
Organic swedish modern stained beech bookcase
Located in Berkeley, CA
Origin: Sweden Designer: Unknown Manufacturer: Unknown Era: 1950s Materials: Beech Measurements: 39.5″ wide x 12.5″ deep x 59.5″ tall Condition: In excellent original condition with...
Beech
$40,093
H 32.29 in W 88.98 in D 22.84 in
Stunning and Luxury Gilt Modern Contemporary Sideboard in Iron Wood & Gold Leaf
Located in Coimbra, PT
Materials and finishes: Base in iron, structure in wood finished in gold leaf, interior in blue satin fabric. Dimensions: Width 243 cm 96” Depth 50cm 20” Height 100 cm 39” Weight 23...
Iron, Gold Leaf
$2,358
H 29.53 in W 42.13 in D 17.33 in
"Archimede" modular wooden storage unit / sideboard by Hirozi Fukuoh, 1962
By Gavina
Located in Argelato, BO
The Archimede sideboard is an icon of mid-century modern design, designed by Hirozi Fukuoh for Gavina in the 1960s. Crafted from solid rosewood and veneered with rosewood veneer, it ...
Brass
Revolving Bookcase by Thonet
By Thonet
Located in Hronská Breznica, Banskobystrický kraj
Revolving bookcase by Thonet professionally stained and repolished.
Beech
$18,500
H 55 in W 66.5 in D 18.5 in
1960s Walnut High Sideboard Cabinet with Sculptural Brass Handles, Italy
By Paolo Buffa
Located in New York, NY
A refined Italian high sideboard, circa1960s, crafted in walnut with elegant proportions and exceptional detailing. The design reflects the sophisticated style of Paolo Buffa, noted ...
Brass
$4,952
H 48.04 in W 27.56 in D 22.84 in
Hand-Crafted Modern Metal Bookcase by MAJJ Studio, Sculptural Design
By MAJJ STUDIO
Located in Istanbul, Kağıthane
It is a metal bookcase with a sculptural appearance for storing magazines, books and accessories. It is handmade by stacking 5 triangular metal shelves on top of each other. Its cylindrical feet have variable diameters. When positioned with our two pairs of seat...
Metal
$26,532
H 33.86 in W 74.81 in D 19.69 in
Mid-Century Style Sunshine Sideboard, Black, Gold Leaf, Handmade by Greenapple
By Greenapple
Located in Lisboa, PT
Sunshine Sideboard, Contemporary Collection, Handcrafted in Portugal - Europe by Greenapple. The Sunshine modern sideboard explores the interplay o...
Brass, Gold Leaf, Stainless Steel