james383
New Member
Ready for larger and not even learned on my M3 yet. It's just enjoyable
Posts: 35
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Post by james383 on Aug 2, 2017 23:47:42 GMT
Got my M3 going today and was trying to check the bed level. I locked the z axes so that the bit was 5ths off the left front of the bed, if i move the bed forward bit going to the left rear of the bed it starts digging in say 30ths, slide the dremel to the right rear im good back to 5ths clearance , push bed back bit to the front right corner all is good 5ths clearance , center of bed around the same clearance. Just left rear seems to be around 30ths high. I have loosen the rear rail from frame pushed it down re-tighten and still to high in the left rear corner. IM used to 3d printer where you can level the bed all 4 corners but im new to cnc machines and not sure how to shim this up or even if i have/need to. I know i could shim whatever im cutting or carving level but thought id ask here if there is something im missing or trick to having a level bed or even if one needs a perfect level bed. Thanks for any help or input. I have un-bolts the left rear frame section trying to push that rear corner down lower to let that part of the rear rail to drop but still nothing.
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Post by aforww on Aug 3, 2017 0:03:00 GMT
I'm psycho about this. Mainly because when I got into milling aluminum I found out how important it was. MDF is pretty flat but isn't .001 tolerance stuff. It will have variance. Plus our own tolerances in building. My best advice, make a spoil board from 1/8 or 1/4 MDF. Keep it on the table semi-permanent. Meaning, it doesn't come off until it's jacked up and needs to be replaced. Now, use a surfacing bit and flatten it. This will ensure the table is flat to the spindle.
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james383
New Member
Ready for larger and not even learned on my M3 yet. It's just enjoyable
Posts: 35
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Post by james383 on Aug 3, 2017 14:12:02 GMT
Thanks for the reply, I will try and see what all that is as I said im new to this and some of the names is Greek to me. Milling a 10x10 surface with an 1/8 surfacing bit will take me days but I guess ill see about looking for an 1/8in shank bit with maybe a 1/4 tip on it to cut the time down . Again thanks for the input.
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Post by aforww on Aug 3, 2017 23:02:50 GMT
Thanks for the reply, I will try and see what all that is as I said im new to this and some of the names is Greek to me. Milling a 10x10 surface with an 1/8 surfacing bit will take me days but I guess ill see about looking for an 1/8in shank bit with maybe a 1/4 tip on it to cut the time down . Again thanks for the input. Are you using the spindle or a router? If you are using a router you can get a 1.5 inch surfacing bit. If not, get the biggest you can find.
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james383
New Member
Ready for larger and not even learned on my M3 yet. It's just enjoyable
Posts: 35
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Post by james383 on Aug 10, 2017 0:09:15 GMT
I have the spindle and bought a new chuck for it 1/4 and found a 1in surfacing bit for it with 1/4 shank
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Post by aforww on Aug 10, 2017 0:41:44 GMT
That will make life much easier
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james383
New Member
Ready for larger and not even learned on my M3 yet. It's just enjoyable
Posts: 35
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Post by james383 on Aug 10, 2017 0:51:11 GMT
yes for lots of things new bits fast cuts and cleaner
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Post by icarii on Aug 10, 2017 13:01:23 GMT
james383,
Any chance you can share links to the new chuck and bit that you found for the spindle? I have been trying to track down exactly this info for an hour or so myself. Thanks!
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Post by aforww on Aug 10, 2017 13:19:32 GMT
james383, Any chance you can share links to the new chuck and bit that you found for the spindle? I have been trying to track down exactly this info for an hour or so myself. Thanks! Once you get the collet, here's the surfacing bit I use. It's a 1.5 inch, 1/4" shank. Magnate 2715 Surface Planing ( Bottom Cleaning ) Router Bit - 1-1/2" Cutting Diameter www.amazon.com/dp/B0093C1ZNC/ref=cm_sw_r_cp_apa_w0fJzb9CCM3YA
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Post by icarii on Aug 10, 2017 14:09:09 GMT
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Post by aforww on Aug 10, 2017 14:47:50 GMT
Right on, now word of warning. That's a big bit with a whole lot of cutting area. Absolutely do not drop that thing into the material recklessly. Plane off like 1 mm or less at a time.
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james383
New Member
Ready for larger and not even learned on my M3 yet. It's just enjoyable
Posts: 35
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Post by james383 on Aug 10, 2017 14:56:48 GMT
Yes im working on a problem now with the M3 or software wanting to dig out more than what you tell it to. I will try and write a gcode for 1mm cut and run it over as many times as needed till it levels the bed off. But not till we figure why when i say cut a pocket 1/16 it tries to cut way past that. But im sure in time will get it going right. Thanks for all the input and help.
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Post by icarii on Aug 10, 2017 15:09:18 GMT
Right on, now word of warning. That's a big bit with a whole lot of cutting area. Absolutely do not drop that thing into the material recklessly. Plane off like 1 mm or less at a time. Thank you for the word of warning as I am very new to cnc, I will take head and proceed carefully!
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Post by aforww on Aug 10, 2017 15:14:38 GMT
Yes im working on a problem now with the M3 or software wanting to dig out more than what you tell it to. I will try and write a gcode for 1mm cut and run it over as many times as needed till it levels the bed off. But not till we figure why when i say cut a pocket 1/16 it tries to cut way past that. But im sure in time will get it going right. Thanks for all the input and help. We'll get you there. Matter of fact, I have an idea. I'll post it in the other thread.
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Post by Jerry on Aug 12, 2017 5:03:09 GMT
Larger diameter tools are more risky of them coming apart. If you buy router bits look to see if there is an rpm limit. I saw bits at Harbour freight that say 12 k rpm max. Keep the speed down if you have speed control. wear safety glasses and dont stand near the machine if you don't need to. Use common sense. spinning tools are no joke.
Tools breaking can be dangerous even if they are small. Safety first. You dont want loose clothing or rags or anything that can get in the tool
Just in case no one ever told you..
be safe, have fun!
Jerry
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