filamentos

BVOH - Water-soluble supports - is a butene-diol vinyl alcohol copolymer. It can be used to print perfect prototypes, complex structures and movable mechanisms. It particularly comes in handy where traditional supports could be difficult to remove or would not be sufficient to obtain a satisfactory final print result. With BVOH, printing highly complex 3D objects is extremely easy.

Supports created using BVOH filament are very easy to remove. After printing a 3D model, simply place it in warm water and the support filament will dissolve completely. This will result in the actual model being of noticeably better quality than in the case of supports which have to be broken out.

The BVOH filament can be used with printers with a double extruder. It is characterized by high adhesion to various types of materials. It can be combined with popular materials such as PLA, ABS, PET-G, ASA, elastic filaments (e.g. TPU), etc.

The filament should be stored in a dry place, e.g. in a sealed bag, in order to avoid wetting of the material and the resulting deterioration of its properties.




https://fiberlogy.com/en/fiberlogy-filaments/bvoh/






PCTG filament - the best alternative to PET-G




PCTG filament belongs to the same family of polyesters as the increasingly popular PET-G. Compared to its more popular counterpart, PCTG offers increased impact strength, temperature resistance and clarity, making it an excellent alternative to PET-G. This filament does not require a heated chamber, which makes it ideal for use with home printers. It ensures high dimensional stability, while low shrinkage prevents the model from cracking. This makes it an easy-to-print material, even for people without a lot of experience in 3D printing.

CPE | Tritan | Copoliester

https://en.wikipedia.org/wiki/Tritan_copolyester



PA (Polyamide) is an engineering plastic, characterised by its great resistance to impact and able to work continuously at a temperature of up to 120 ºC for an extended period of time.
Its semi-flexible behaviour derives from a semicrystalline structure, which impart strength and durability, best suited for the most demanding technical applications. A low coefficient of friction allows for a short-term use in contact with moving parts.
Polyethylene (PE, HDPE, PETG)?


PLA/PHA: colorFabb's signature blend of bioplastics. A less brittle and stunning PLA filament. A buttery, creamy and super smooth filament. This is where it all started: PLA/PHA without any color.


PP - Polypropylene is great for high-cycle, low strength applications due to its fatigue resistance, semi-flexible, and lightweight characteristics.


PPS (Polyphenylene Sulfide)





Polyvinyl alcohol (PVA)

PostgreSQL - Supabase - Ferramentas para acesso a banco de dados

    Ferramentas como Beekeeper Studio e DBeaver oferecem uma solução eficiente para gerenciar bancos de dados online, como o Supabase, especialmente nas versões gratuitas que possuem limitações de funcionalidades. Elas permitem realizar tarefas essenciais, como importação, exportação, backup e execução de consultas complexas, sem depender das restrições de funcionalidades nativas dessas plataformas. Isso diminui o impacto das limitações impostas por versões gratuitas, permitindo aos desenvolvedores e administradores gerenciar e manipular dados de forma flexível e sem custos adicionais, maximizando a produtividade e a eficiência em seus projetos.

https://dbeaver.io/

https://www.beekeeperstudio.io/

SQL: Função listar tabelas PostgreSQL / SUPABASE e outros

Segue um SQL para criação de uma função dentro do PostgreSQL / SUPABASE

CREATE OR REPLACE FUNCTION get_table_list()

RETURNS TABLE(table_name TEXT, table_type TEXT, table_schema TEXT) AS $$

BEGIN

  RETURN QUERY

  SELECT t.table_name::text, t.table_type::text, t.table_schema::text

  FROM information_schema.tables t

  WHERE t.table_schema = 'public';

END;

$$ LANGUAGE plpgsql;

select * from get_table_list()

Consulta SQL para listar os nomes dos campos de uma tabela no PostgreSQL  / Supabase:

SELECT column_name
FROM information_schema.columns
WHERE table_schema = 'public'
AND table_name = 'nome_da_tabela';

Consulta SQL para consultar a definição (o SQL) que criou uma view no PostgreSQL / Supabase:

SELECT definition
FROM pg_views
WHERE schemaname = 'public'
AND viewname = 'nome_da_tabela';

ou

SELECT view_definition

FROM information_schema.views
WHERE table_schema = 'public'
AND table_name = 'nome_da_view';