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CNC-2116 - Up and running, sort of (2015-03-21)
mcseforsale:
Subscribed...
AJ
Yvan256:
--- Quote from: TopJimmyCooks on January 11, 2013, 09:44:39 am ---Wow - you're going to cut 10 pieces of MDF and ~20 bolts. I can't help but think that four full sized pieces would give better, cheaper, more rigid results. Do you have a friend with a tablesaw?
It does look like a good solution to cutting pieces only with the smaller CNC. I don't want to be super negative, but if you're working MDF, you have to have a way to cut larger pieces. It comes 48 or 49" x 96 or 97".
--- End quote ---
I think the result will be at least as strong as a single piece of 5/8" MDF, if not more. Using the two small "tabs test" panels as a guide, I can tell you that it's extremely rigid. The goal is to prevent warping from side loads and I think it will be more than enough for that goal.
I will be able to use the finished machine to cut new parts for itself once it's assembled, to gain some space in the Y axis (curved sides). None of the people I know have a scrollsaw and I don't want to cut complex shapes by hand. This is why I'm building the CNC in the first place. ;)
Also, the sides need holes for the motor, the rod, bearings, etc. All the people I know aren't equipped to drill half-depth round pockets so going with CNC'ed panels removes that problem.
The base and surface of the machine will be cut with a tablesaw (5/8" MDF) since it's only plain rectangles and I have someone who will help me cut a big sheet of 3/8" MDF into 140 small panels for my MDX-3... I just calculated that the pile of panels will be more than 1.3 meter high. :o
My biggest problem at the moment is finding a place where I could buy a small 28x14cm piece of slatwall, all they have is 4x8 feet sheets. :(
tightwad:
at what linear speed and depth are you able to cut? what kind of bit do you use? How do you secure the piece to the table?
Yvan256:
--- Quote from: tightwad on January 11, 2013, 02:34:21 pm ---at what linear speed and depth are you able to cut? what kind of bit do you use? How do you secure the piece to the table?
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Are you talking about the Roland MDX-3? The speed is set to "5" (I think it means 5 mm per second, although it seems faster than that to me). The cutting depth is 0.02mm.
The bit is a 1/8", 1-flute straight end mill (the website says 3/4" for the cutting length but it's wrong, it's around 1/2"). I could probably go faster or cut deeper on each pass with a 1/16" bit, but most places I find online don't have 1/16" bits with 1/4" shanks that can cut 1/2" deep. And the places that do have those bits sell them for 40$ or more, plus shipping, etc. It's not worth the cost.
I have a 1-slot slatwall MDF panel instead of the flat plastic sheet that comes with the MDX-3. To secure the piece I use bolts and big washers and the piece is held on two sides by the edge of the washers which are at about 45 degrees once they hold the piece. I'm trying to get a larger piece of slatwall and I plan on making better clamps to hold the panels in place.
Cutting the smallest panel in the side panel assembly shown above will probably take 2 to 3 hours, the bigger ones will probably take 5 to 6 hours. Doesn't really matter, I'm not in a hurry to complete it. I'm just happy to be able to use a small CNC to cut parts for my bigger CNC. :D
The machine I'm building will use a Black & Decker RTX with a Dremel #650 bit.
Bender:
--- Quote from: Yvan256 on January 11, 2013, 04:57:08 pm --- I'm just happy to be able to use a small CNC to cut parts for my bigger CNC. :D
--- End quote ---
:laugh2: That my friend is how the robot apocalypse starts
I love it!
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