Needs a bunch of tidying up, but seems to be working. One issue is that the strut plates are a few mm shorter than I expected. I put 1,388 mm in the Vector76 Strut Generator (value from LowRider V4 Calculator), but the struts are both about 1,384/1,385 mm. Tool path looks like it cutting on the outside. Any suggestions?
Thanks
Change the tool path to cut on the outside.
is your tool diameter chosen right, and does it correspondent with the kerf it makes?
I think so. I’m using a 1/8" Single Flute Endmill from V1 and have it set to 3.18mm.
It’s possible you need to calibrate your motor steps…
It was recently discovered that some of the belts that were shipped did not match the exact tooth profile that was expected, and caused some slight inaccuracies over long distances
See here: Houston we have a problem, belts
The generator I believe, already generates it 0.5mm short.
So the file is likely set for 1387.5. If the final measurement is 1385, that sounds within the range of some of the belt error we were seeing
This may be the answer. I’m using a tape measure, so not the most accurate, but here are the measurements.
Part is about 1,384.3 mm with an expected size of 1,387.5 mm = 1.0023
I just used the bit tip/tape method and moved 2,000 mm. Measured 1,995.5 mm = 1.0023
I’ll change the step setting and try cutting them again tomorrow.
Lots of variables. No strut plates. My first CNC. Marginal measuring tools. Having said all that, setting steps to 50.113 makes the parts come out correct. I measure the new strut plates at 54 10/16 inches which converts to 1,387.475 mm.
Congrats and glad you got the steps adjustment made!
Here it is with the new strut plates, wiring tidied up a bit, and a drag chain printed from @DougJoseph’s design.
Cable drooped a little and would catch on itself, so I printed up something for it to ride on as a short term fix.
Only other issue is that the xmin stop is a little too short. The core hits the plate screw just before it triggers. I taped a bit of cardboard to the plate so it sticks out a bit more. Alternatively, I could probably bend the trigger arm out.
I think the next test will be cutting the table parts.
