Woodworkers of Head Case unite!

[VPI]

Yeah, I was thinking dominos but worried the treated 4x4s would shrink down and cause issues with solid connections to hardwood.

[dsavitsk]

Wood doesn't appreciably move lengthwise, so you can minimize the effect from wood movement by constructing accordingly.

[VPI]

Yeah, my concern was the 4x4s shrinking/twisting while glued to a non-stretching hardwood in the middle. I think an inset domino job will be the best way to go…if I can remember how to do one of those. 

Or maybe a welded steel holder for it. 

[dsavitsk]

4x4's should be pretty stable. Softwood doesn't move any more than hardwood. But if it is a concern, you can build your own stable 4x4's from 2x12's using this trick:

 

 

[VPI]

If I end up getting the sign built without a disaster, any stand will be acceptable. 

Finished the biggest pocket and moved to the second largest, which is on the opposite side of the sign from the other and the CNC just screamed back to the middle of the big one and was going to try to cut it there. 

Everything runs right in simulation so I have no idea what I have screwed up. 

[naamanf]

12 minutes ago, VPI said:

If I end up getting the sign built without a disaster, any stand will be acceptable. 

Finished the biggest pocket and moved to the second largest, which is on the opposite side of the sign from the other and the CNC just screamed back to the middle of the big one and was going to try to cut it there. 

Everything runs right in simulation so I have no idea what I have screwed up. 

Saying that part of the G-code cut right then it went somewhere is shouldn’t have?

[VPI]

Nope. Never started, I stopped it when I saw it go way past the part of the sign it was supposed to be doing and was about to put my street number right in the top part of the lake.  Half the sign away from where it was supposed to start. 
 

[naamanf]

Check where you have the origin set in V-Carve and where you have it set on the machine. 

[VPI]

Bottom left, just like it was on the lake and everything else as I think it is set once for the whole project. 
 

 

[naamanf]

1 minute ago, VPI said:

Bottom left, just like it was on the lake and everything else as I think it is set once for the whole project. 
 

 

If it models right but it’s going somewhere else something isn’t set right. It’s a dumb machine and does what it’s told. 

[VPI]

I am going to turn it off and turn it back on again.  It was a full 7.5 inches too Y but the X seemed close.  Had it return it it's X,Y Zero and it went right where it was supposed to.

Edited Saturday at 10:31 PM by VPI

[VPI]

Seems like the old IT trick worked.