Threading plastic elements should be done using turning tools. It is not advisable to apply screw-taps as these will cause stress leading to cracks. Only for small size openings in soft materials... |
In cutting, band saws, circular saws and frame sawing machines are used with large centre distance and a channel for effective removal of chips. The teeth should be well sharpened so that... |
When drilling in materials like polyamide reinforced with glass fibre or PET, it is recommended to apply enlarging drill. When drilling through, the feed rate should be decreased... |
Turning of small number of elements can be done using turning tools from coal or high-speed steel. When machining more detailed jobs (automatic lathe) or working with reinforced materials... |