motor grader, examples can be found at machinerytrader.com
motor graders = the blade sets a long distance between the wheels of the machine. the longer this distance, the less in change of grade will happen once you go over the road a couple times pending on how much material needs to be moved.
a 3pt hitch rear blade, is basically same blade on a motor grader. but the "distance" is not there. and generally there are no "gauge wheels" or like sticking out further back behind the blade. poor mans motor grader. but for most folks a 3pt hitch rear blade is good enough.
a 3pt hitch grader scraper / land plane. is more of a "sifting device" were it allows larger rocks to come to the surface, and lets the smaller rocks and dirt go down.
Tractor Attachments And Skid Steer Attachments For Any Tractor Or Skid Steer = good spot for newbies to check out various implements in how to set them up and use them.
drag harrow, chain drag harrown, chain link fence, H or I piece of steel, chunk of telephone pole, these all have been used to "smooth" things out.
TNT (top and tilt) for 3pt hitch. = replace top link turnbuckle and/or 1 or both side link turnbuckles with a hydraulic cylinder. a TNT setup will let you on the fly from seat of tractor adjust 3pt hitch hydraulically, so you can fine tune everything nice and quickly.
a 3pt hitch does not offer "down pressure" the only pressure holding an implement down is the weight of the implement itself. and your only real control without TNT, is by purely controlling the raising and lowering of the 3pt hitch. and then your manual adjustments of the turn buckles on the 3pt hitch.
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i would advise making sure you have your "check chains" and your sway bar/chains for the 3pt hitch.
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to note it. 3pt hitches are awesome at pulling stuff, all day long non stop.
BUT if you have an implement draging on the ground or digging into the ground. and you go to turn, you can bend up the 3pt hitch.
ALSO if you go in reverse with 3pt hitch implement in the ground, you can also mess up your 3pt hitch.
while 3pt hitches are strong and can take a beating. you need to make judgment calls along the way. when turning and how much you turn and/or going in reverse.
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with everything above said... google...
forestry roads
there is 5 or so descent sites out there, that cover different grades, crowning of roads, ditches, culverts, and like that most folks can directly apply to their dirt and/or gravel driveways, and roads throughout there property.
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NOTE: there is "to dry" and "to wet"
to wet is easy, you making ruts and making pot holes.
to dry is easy, road is like concrete and everything is skip hoping across the road.
a good rain will make road wet. but as it drys out you got a chance to get out there to reshape the driveway/road. generally atleast for me. i am making an "impression" with my tires on the dirt road. i am not making ruts. but the dirt / gravel is physically moving some. this is time i normally like to deal with dirt/gravel. no dust storms, all implements tend to dig in easily. and i can move a lot of dirt/gravel easily.
the issue with above is "it is still to wet" for like finishing touches. but it is a good time, to load up as much weight as you can. and go 1 tire width at a time, and drive up and down the road, compacting everything. and then go back over it at a different angle to compact it a bit more 1 tire width at a time. you need a couple or more angles of attack in compacting. so the soil and rocks all begin interlocking together and in essence forming a solid hard pan on the surface of the road.
when the road drys out a bit more. it is more time for finishing touches.
NOTE: the compacting thing, may require doing it a couple times, (waiting for it to rain and drying out some then 1 tire width at a time at different angles). for a good solid compaction to happen. but until this happens. folks need to "slow it down" and try to stay off of it as much as possible when it is to wet, and making any sort of ruts.
other words. you do not have the huge heavy machinery county and state department of transportation has. so you nickle and dime it. and that is the compaction thing doing 1 tire width at a time.