Search:

There will surely be a next machine, but I’ve got to have a lot of fun with this one first!
I may be able to improve rigidity if I bolt some steel squares on the sides or similar. We’ll see.

On...

Scratch that last part. I was able to get 20 um runout on an end mill mounted on the ER -11. That seems more useable. I'll make sure I clean everything properly and measure again. Don't think I'd...

Hi there,
I’ve began the construction of the containment vessel, aka the enclosure, out of MDF. This should keep dust out of the floor and broken endmills out of my face :), hopefully. There will be...

Thanks. Still a long way to go. Thak you for all your help.
Juan

Here is a short video of the very first chips made by the machine under computer control. For a first test, feeds and speeds are basically “made up”, will have to do some more reading and...

Thanks! Don’t worry, there will be video, hopefully this week. I have to do some reading on feeds and speeds, and get up to speed in CAM.

I see. Makes sense.
We went through torque calculations...

I counterbored the holes so as to have a bit of wiggle room for adjustment. Used washer-head screws.

------------------------


After a couple of days playing hide and seek with the pouring...

Hi there,
I’m happy to report that I’m still alive and made it through allegedly the hardest semester in my degree (we’ll see). A little too busy with thermodynamics, fluid mechanics and what not to...

I've glued some of the pieces together, but I've run out of wood glue and so did the hardware store apparently. I've also tested the power supply and the stepper motors and drivers which have...

Sure, I have some pieces left just for that. But I'll wait to see where they're needed most. The bottom "shelve" will get surely filled with stuff...
Juan

Interesting article. I'm sure I'll learn more on the subject on my automation classes.

Here is a simple workbench that will hold the machine and associated electronics/computer.
Juan...

Thanks, will have a read.
Juan

I have that model plane halfway assembled. I turned to model submarines, less catastrophic when things go wrong (somewhat) :). This is some of my work:https://youtu.be/4K4q5dHAo6c
Will be using it...

All the wood pieces have been trimmed to size. The router has been great, and now I have a bag of sawdust. A couple mishaps, but nothing major and it also builds "character" :) as they say. I'll glue...

The plywood I got is not that great, what they had at the local home improvement store in the appropiate size. It's poplar, easy to work with but kind of soft. Now that I look at the spec sheet it is...

Ordered motors, power supply and other bits and pieces. Ordered the rails too. Kind of blew the budget, but par for the course, things cost what they cost. Here are all the wood pieces cut out with a...

Looks great!

I see. Well, at any rate those motors are good enough for this application, even better if they don't have to withstand acceleration forces while cutting, I'll probably order them soon.Will read more...

You have already helped me more than many university teachers. Thank you for your time, I can only hope to give this back in the future.


I've revised the calculations, separating cutting and...

Regarding rails I'm thinking of these https://www.aliexpress.com/item/1005001907901796.html?spm=a2g0o.cart.0.0.1df23c00po56al&mp=1 Their 20 mm counterparts from the same store have good reviews and I...

I see. If anything, I want to undercapitalize :). I did look at the torque curve of the motors, and I have done so in further analysis.

I've redone the calculations for an acceleration of 0.2g,...

Thanks for the calculations. I've done my best to adapt them to my case, se attached. Main asumptions are on the first page, an acceleration in the rage of 0.5 g seems to be typical and for speed,...

Hi Peter,
Thanks for the tips on the screws and materials. And for the extensive plywood design guide.
Nice machine base.


On the laminated aluminum sheet and plywood, I think in my case it is...

Sorry I missed this part last time.





The thing is, if I'm able to make a machine out of plywood that can already cut aluminum good enough to make another machine, I would have already...

Great, thanks.
I'll make a new design including your considerations. I'll also try to get hold of a catalog of aluminum profiles from a local supplier, maybe I could use some suitably sized...

Yes, I've seen it. You have done some extensive design work. I'm sure it'll turn out great.


Regarding wood, I think a design based on plates lends itself well to wood prototypes. Or one could...

Mook512:


I've watched those This Old Tony videos...multiple times. In fact it's what got me interested in the subject. Yes, it's pretty close to what i'm aiming for, but for size and cost :).
...

First one is easy, second one not so much...:)


So maybe I should stop calling it a mill, milling steel is not on my requirements nor my capabilities.


I know 0.1 mm is almost woodworking...

Thanks for the quick answer. I suppose that suitability would deppend on the speeds and feeds, depth of cut and so forth. I'll have to run the numbers, even if the rated load for SBR rails is...

Hi everyone,
I've been thinking about building a CNC mill or a router for several years. These are some of my thoughts:

Objectives/considerations:

-Main goal is learning about CNC in general...