On the 3018, you have to try to turn them by grabbing the screw itself.ħ. A nice feature on the 3020, is that all the feedscrews have knobs for manually turning the screws. The 3020 has stronger servos than the 3018.Ħ. The stiffeners for the 3018 are 20x20 extrusions, giving less stiffness than the larger ones on the 3020.ĥ. The linear bearings are thus supported their entire length on the 3020, while the rods are the only support on the Prover. The X axis slides (mounted at the top of the upright) are linear slides mounted on 20X40 extrusions on the 3020, and 10mm round linear bearings on 10mm rods on the Prover. The rods the bearings slide on are 12mm on the 3020 and 10mm on the Prover.Ĥ. The linear bearings under the bed as well as the assembly holding the feedscrew are metal on the 3020, on the 3018 they are plastic. The uprights are 2mm thicker and have a wider base with 16 screws attachment bolts. The side pieces on the base assembly are 40mmX40mm extrusions, rather than the Prover’s 20X20.Ģ. The 3020 has several improvements over the 3018:ġ. The 3020 costs about $150 to $200 dollars more than the 3018 (depending on sale prices), so for lighter jobs you can decide.
It would be perfectly good for most of my needs, but the 3020 has a stronger mechanism. The table thus has more give than I would want for a precision machine. The table with the extension, though is made from two sections of extruded aluminum set on a MDF base.
EASEL SETTINGS FOR 3018 INSTALL
I was planning to install the extension on my a 3018. The 3018 has an extension kit available to make it a 300mm by 400mm table machine. The 3018 has one option that the 3020 may not have, though time will tell. The cost of the upgrades would have made it more expensive than this new model they just released, and would still have been less sturdily constructed. I had been looking at their 3018 Prover machine (300mm by 180mm table), but had wanted to do some immediate upgrades to it. Most of the 3018 machines out there have Bakelite front and back base pieces, as well as the uprights.
EASEL SETTINGS FOR 3018 PRO
The 3018 Prover is the best value among the 3018 machines, even over their lower cost 3018 Pro machines. SainSmart has a great reputation in the small CNC router community. This will be a build log of the unboxing, and assembly of the router. I purchased a SainSmart Genmitsu 3020 CNC Router (300mm by 200mm table) during their Pre-order sale, and it arrived the other day. This will be a three part un-boxing, with assembly to start in Part 4.
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