Finally I got the resin printer and did a reprint of the light knob. Much better result compare to the first prints I did using an ordinary 3D printer with PETG filament. From the resin printer there is no need for any refubrishing, looks stunning right from the print.

The file can be downloaded from my previous post: https://mc.grenasberg.no/2020/12/26/3d-printed-light-knob/

item: 09320-08012

Please feel free to download the STL file:

Latest update: Got the resin yesterday and did a test print.

Was very pleased and easy to fit the part. A bit stiffer compare to the “real” rubber, but still flexible. Get much softer at temperature. Let it rest in hot water for some minutes before mounting.

Link to the resin supplier: https://wanhao.store/collections/wanhao-brand-resins/products/3d-printing-resin-rubber-resin-1000ml-bottle?fbclid=IwAR2NYoEK_n_4imI9BA3BnFjWl97fM67uk2CWa8I3e1a5bZNwuBYF3sFkxRk

item: 09320-08011

Please feel free to download the STL file for 3D printing.

item: 33651-3100

New 3D file for the Battery box i ready, the pad to be printed in flex filament (rubber replacement) :

After a long time of nothing, here is a new post on my blog.

The image above is from my CAD model done in Fusion 360. I used the lightswitch knob from my GT750 as a template. Started by drawing a sketch around the knob, took a photo of it and imported into Fusion 360. Compleated the CAD model in Fusion360 and made the printer file.
The knop was printed on a Prusa Mini printer in PETG filament.

Here is the result, mounted back on my GT750. Not a perfect finish and I tried to polish the surface a bit. Not easy to do, because the heat from the pad can easily melt the part, as it did on the top. On the other hand, if you ruin the prat, just press reprint button and make another try 🙂

This was only a sample to test the technology. The knob will be needed for my GT380 and I will also make a new print using a resin printer, able to print in a better resolution and a smoother finish. The new printer is on it’s way from China and will hopfully arrive at the end of February.

Please feel free to download the light knob if you want to make you own print.