Hi all,
I haven't done one of the "behind the scenes/how I make stuff" videos in a while, and was thinking we could all use something a bit lighter like that at the moment.
Cutting glass inserts to their correct length has been one of the tasks I have continued to refine and improve over time. This video shows how I cut glass inserts to length now, using a custom lathe I designed and built from scratch:
This is an update to the original “how I make inserts” post from last year, as my new method is better than the old one, and what the hell, I feel like showing it off.
Hopefully it makes for an interesting video, all 3 minutes of it, lol:
More info:
I recently completed a project to make the above tool for the shop - a custom built lathe to make it easier to cut better quality glass inserts, with more repeatable results. I hadn't worked with glass tubing prior to making these heaters and don't claim any great skill with the stuff, so I need a method that's simple and repeatable. As I said earlier, there are several ways to cut tubing, and some of those produce better results than this method, but are more difficult for me to do, making them a poorer fit for me, so this is the one I went with.
For the curious, the lathe's headstock is made from a CNC "4th Axis", which came fitted with an ER34 collet chuck. The ER34 collets come in exact sizes and securely hold the 15mm and 16mm tubing stock I use. The headstock has a pass-through, so long stock sticks out the back of it.
The motor is a NEMA 23 stepper motor with an integrated controller, and I built a simple interface to access its control.
The frame is made from 8040 and 40 series aluminum extrusions.
The Dremel is mounted to a cheap XY table, but it works very well for this purpose!
As always, thanks for watching!
Cheers,