Last nights Print
660g of HIPS
The other side with 1 of the 3d printed Nylon/4mm bicycle bearing balls bearings inserted
We need 4 of those already got 3 so 1 more to go
Here is the rack setup printing that will lift the robot
Double helical 1.84 mm modulus on a 14.5deg pressure angle and a 30 deg helix which translates on the rack to an effective 2.125mm modulus We need 4 of those and 48 bearings of which we have most already printed. So this is going to be a busy printing week. when done it will hopefully elevate our robot and enable it to climb a 19 inch platform. Drive up push itself up with the 2 rack setups that have wheels drive fwd until the front wheels are on the platform retract one rack move fwd until the rear wheels are up too and retract the rear rack set. The rack is a double rack with a gear set on each side that meshes so to negate any deflection the double helical makes it self aligning and the double setup top and bottom gives it some grip in every direction - at least that is the intent. Just to illustrate that our way of printing is driven by different needs. No nice models here Just stuff that hopefully survives battle.
And here is one of the power of 3DP. when its done it will have eaten up a little over 4 kg of HIPS so a little less than $ 40 of HIPS and about $8 in bearing balls and $15 in bridge Nylon for the bearings. and about $12 in hex aluminum shaft for the bearings and gears. So all in all less than $100 - so do that in metal and CNCing it - if you can cut double helical gears and racks