Summary

use laser mirror 10101
https://www.aliexpress.com/item/1005002665309984.html?spm=a2g0o.order_list.order_list_main.10.599e1802z8S3C9
use copound grease for thread
use M4 insert nut
https://www.aliexpress.com/item/32890237459.html?spm=a2g0o.order_list.order_list_main.222.1ec71802KNJchM

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>Ender 3</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Yes</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.2-0.12</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>20%</p></div></p>                                                    <strong>Filament:</strong> basic PLA                black / silk blue

OAG 2" with 1"1/4 focuser