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Try brazing, welding cast iron is a smoky slobbery mess.

Will do tomorrow!

Mods, Mods, and More Mods....

Since my last post I've added two threaded rods to the bottom of the gantry and added a moving knot system on the gantry.

The threaded rods really straightened...

Glad to see that you are making some progress!!!

I gave my machine a 2nd birthday party today and gifted it an angle iron gantry brace. But when I looked at the right gantry side I was shocked to...

Ok, I looked up the mods, actually it was easy to find them, they were the first couple of posts in te Mods section.

Check out video #4 on CNCJay.com
In fact watch all the videos, 1-4 for the...

I think that everyone has had a problem with the X axis whip. One of the issues with a long lead screw, especially the smaller diameter ones.
Higher feed rates will produce more whip, you have to...

The tape serves to connect the two hubs together so that there is no play (backlash) between the hubs and the spider. I tried the spider smash too but couldn't get the results that I was looking for,...

Welcome back!!!

I had that problem with my lovejoys too and thought about deleting them. My first crude homemade machine didn't use them.
However I tried running a layer of tape around them and...

I (and I'm sure others here) don't really understand what you are asking for...

When I see a mention of Bamboo I think of a fishing pole.

I'm in SC too.

Fatboy

Ferny,
Those look nice!
Are you using door skins to carve these on for testing? I have a stack of them that are given to me on a regular basis and I do all my test work on them.
Fatboy

Ultrabrains,
Look in the beginning of this thread.
When I was thinking about building my machine I (like others) read this entire thread plus other related threads on the subject to get a grasp of...

We'll look forward to seeing some sawdust soon...just don't do what I did yesterday.

I offered to make a buddy a no parking sign for his shop. Didn't take long to pocket a 16" X 24" sign with 3"...

Hey, that's great news!!!
Now let's see some action out of that machine.

Fatboy

Oh the things that we learn when dealing with CNC!!! The machine doesn't really care which axis is which as long as there is enough travel. I still screw up, just last week I set about to cut a...

Those angles make the gantry more rigid...one of these days I'm going to cut a set out of bed rail for mine. That rail has been standing next to the door forever...one of the these days!
In the mean...

Now that's funny!!!

I've been looking at setting up a lathe running Mach3Turn. Working with X and Z running in what seems all the wrong directions is a challenge.
My brain hurts...

Fatboy

TYPO.... I meant X, Sorry. They are next to each other on the keyboard and even after proofreading this about 5 times I still screwed up.

Worst yet is that I haven't checked in till this morning...

Bent lead screws are a pain in the arse. I upgraded from single starts to 5 starts in the first week because I thought that the 5's would be higher quaility with less run out. Actually they were...

I run mine at 100 during the summer and 75 winter. However if I'm cutting a design with a lot of short moves I'll set the feed rate in half.

Fatboy.

I use 1/8" shank Dremel bits in my router for small stuff. I'll have to look up where I got it from but I bought a 1/8" ID 1/4" OD split sleeve adapter. The smallest 1/4" shank tool that I use is an...

I took a look at your code, "N50G00G43Z2.0000H4" is sending your Z to 2" which shouldn't be a problem. I did an air cut of your file and verified it as good. If the 2" doesn't sit well with you then...

Another commercial, another file.
Forgot to change the start points but this is the entire design.

Here, try this, minus the box. The center is the X and cut depth is .01".
Just a quickie during a commercial break of Am Pickers.

Crap...to big, PMed

Edit, Never mind it loaded...

Ok, I looked this over and like I said before the machine is doing as you wish, pen up 1" per N20 and then to the start point as specified by N30 (X19.3433 Y31.0613). That puts your work near the...

I see the 5" box which makes the circle diameter 7.0711" however either the box or the diagonal lines are an open vector that I haven't been able to close. Looking at the nodes shows me that none are...

Congratulations on getting your machine up and running!!! Now on to learning to make it do as you wish. Sometimes it seems like the machine or software has a mind of it's own but I know from...

Limit switches are a good thing to have to shut the machine down if it exceeds the maximum travel but if you are going to be standing watching on it's first cutting tests then you can shut it down...

Your machine is really coming along. Glad to see that you've made a lot of progress since the last time I saw pictures of it. The computers that I used with mine were all Craigs List used specials...

Check the JGRO plans.

Fatboy