CNC Foam Board Cutter!

[Houndpup Rc]

Got the bottom roller wheel on:

 

[LitterBug]

So I have 2x 2040x4'. The problem I have is my 300x300 laser rack and all the hardware are for 20x20 rails. D'OH!

 

[Houndpup Rc]

So I have 2x 2040x4'. The problem I have is my 300x300 laser rack and all the hardware are for 20x20 rails. D'OH!

That stinks!

 

[LitterBug]

 

[Houndpup Rc]

View attachment 256197

Looks like I can save some filament and bolts😂😂 (Why do people ALWAYS give ideas AFTER I design it! (JUST KIDDING) 🤣🤣🤣🤣)

 

[Mr Man]

Looks like I can save some filament and bolts😂😂 (Why do people ALWAYS give ideas AFTER I design it! (JUST KIDDING) 🤣🤣🤣🤣)

lol 😂

 

[Houndpup Rc]

lol 😂

Looks like I can save some filament and bolts😂😂 (Why do people ALWAYS give ideas AFTER I design it! (JUST KIDDING) 🤣🤣🤣🤣)

Guess it serves me right for not keeping you guys up to date😂😂

 

[Mr Man]

Guess it serves me right for not keeping you guys up to date😂😂

My laser has the same setup as Litterbugs too 🤣🤣🤣. (though I did JUST now remember that 😂)

 

[Houndpup Rc]

For a while I was trying to decide whether to go with Core XY or Cartesian...I opted for Cartesian as the belts would be shorter so they shouldn't stretch as much.

 

[Houndpup Rc]

Updated gantry bracket:

 

[Mr Man]

Updated gantry bracket:
View attachment 256199

Looks good! 👍

 

[Houndpup Rc]

Looks good! 👍

Thanks!

 

[Houndpup Rc]

Got the Y axis done! (I love the mirror tool!😂😂)

 

[Houndpup Rc]

Anyone got pics of the center head on their CNC?

 

[LitterBug]

My laser has a rod that connects the Y steppers directly together so they don't get out of sync and be at different depths.

 

[Houndpup Rc]

My laser has a rod that connects the Y steppers directly together so they don't get out of sync and be at different depths.

Yeah, I noticed that...That's why I will have homing stops on each end and the board is a newer one that has two ports for the Y so that they can be driven separately.

 

[FlyerInStyle]

Whacha all think? Will a one bolt on each side, holding the extrusion to the corner post be enough? It's a 1/4" bolt and I plan on it tapping into the extrusion:
View attachment 256086
View attachment 256087

Use t nuts. It is just simpler with extrusions. Also I had this idea while ago, and keep wanting to build it but never do, what about PVC pipes for linear rods? For these low loads should work well

 

[Houndpup Rc]

Use t nuts. It is just simpler with extrusions. Also I had this idea while ago, and keep wanting to build it but never do, what about PVC pipes for linear rods? For these low loads should work well

I think it could work pretty well, just I hope to add a router to this someday, and I just like the looks of extrusion better😂😂

 

[LitterBug]

Yeah, I noticed that...That's why I will have homing stops on each end and the board is a newer one that has two ports for the Y so that they can be driven separately.

the controllers I have start where you have the head. The stops are limits only, and not for calibration/homing

 

[Mr NCT]

Anyone got pics of the center head on their CNC?

I've tried three different heads; the original, one with linear rods and bearings and this one, and this is my favorite. I put an 1/8" aluminum bottom on it to act as a heatsink and thread better. On the top X axis wheels I used eccentric spacers to more easily take the slop out of the slider. Probably the best two mods were putting a 12v cooling fan on the drivers (no more pausing when it gets hot) and put in X and Y homing limit switches.