Troubleshoot

Layer Shifting dan Misalignment dalam 3D Printing

Sebagian besar printer 3D menggunakan sistem kontrol loop terbuka, bisa dikatakan bahwa mereka tidak memiliki umpan balik tentang lokasi sebenarnya dari toolhead dan stepper. Printer hanya berusaha untuk memindahkan kepala alat ke lokasi tertentu, dan berharap alat itu sampai di sana. Dalam kebanyakan kasus, ini berfungsi dengan baik karena motor stepper yang menggerakkan printer cukup kuat, dan tidak ada beban yang signifikan untuk mencegah toolhead bergerak.

Namun, jika ada kesalahan, printer tidak akan dapat mendeteksi hal ini. Misalnya, jika toolhead menabrak sesuatu saat sedang mencetak, maka toolhead akan bergeser tanpa mampu dideteksi oleh printer. Mesin tidak memiliki umpan balik untuk mendeteksi ini, jadi ia akan terus mencetak seolah-olah tidak ada yang terjadi. Jika Anda melihat lapisan yang tidak selaras pada cetakan Anda, biasanya disebabkan oleh salah satu penyebab di bawah ini. Sayangnya, setelah kesalahan ini terjadi, printer tidak memiliki cara untuk mendeteksi dan memperbaiki masalah, jadi kami akan menjelaskan cara mengatasi masalah ini di bawah ini.

Shape Shifting (Sumber: milwaukeemakerspace.org)

Toolhead 3D Print Bergerak Terlalu Cepat

Jika printer anda setting mencetak dengan kecepatan yang sangat tinggi, motor untuk printer 3D Anda mungkin kesulitan untuk mengikuti programnya. Jika memang nada menginginkannya, biasanya akan mendengar bunyi klik ketika motor gagal mencapai posisi yang diinginkan.

Jika ini terjadi, sisa cetakan akan tidak selaras dengan semua yang dicetak sebelumnya. Jika Anda merasa bahwa printer Anda mungkin bergerak terlalu cepat, cobalah untuk mengurangi kecepatan pencetakan hingga 50% untuk melihat apakah itu membantu. Jika salah satu dari kecepatan itu terlalu tinggi, dapat menyebabkan pergeseran terjadi. Jika Anda merasa nyaman menyesuaikan pengaturan lebih lanjut. Disarankan untuk memperlambat pergerakan dengan control dari slicer atau software.

Pada mesin kami Centi GFC-02 terdapat controller speed pada interface layar, sehingga untuk merubah kecepatan akan sangat mudah.

Masalah Mekanik atau Elektronik pada proses 3D Printing

Jika masalah masih berlanjut, walaupun telah dilakukan pengurangan kecepatan secara signifikan, maka kemungkinan karena masalah mekanis atau listrik dengan printer. Misalnya, sebagian besar printer 3D menggunakan belt yang memungkinkan motor mengendalikan posisi toolhead. Belt biasanya terbuat dari bahan karet dan diperkuat dengan beberapa jenis serat untuk memberikan kekuatan tambahan. Seiring waktu, sabuk ini dapat meregang, yang dapat memengaruhi ketegangan sabuk yang digunakan untuk menempatkan kepala alat.

Jika muncul masalah yang sama, maka harus dilihat apakah semua belt dikencangkan dengan baik dengan ketegangan yang sama.

Ada juga beberapa masalah listrik umum lainnya yang dapat menyebabkan motor kehilangan posisi mereka. Misalnya, jika tidak ada cukup arus listrik ke motor, mereka tidak akan memiliki cukup tenaga untuk berputar. Kemungkinan lain juga bahwa motor stepper panas, yang menyebabkan motor berhenti berputar sementara sampai elektronik dingin. Walaupun ini bukan daftar yang lengkap, ini memberikan beberapa ide untuk penyebab umum listrik dan mekanik yang mungkin ingin harus di maintenance secara berkala.

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