Mounting Heatbed to Aluminum plate.

I am in the process of building a Ordbot Hadron. I just received my MK2B heatbed and was
wondering what is the best way to mount and level it onto the aluminum plate. I have read about
useing springs, stand offs, or just long screws with nuts for leveling. Any suggestions or links to
a page explaining this. I am not sure how high the heatbed should be from the aluminum plate
or hardware required. From some of the pictures I have seen it looks like about 1/2 inch would
be enough so that the clips can clear to clamp the glass plate.

Mike

I have a Ordbot Hadron
I have a heated glass bed.
Made up this way:

Aluminum plate on maker slide
Silicone thermal insulation (a silicone hot pad)
Bed Heater (hard PC board type)
Aluminum heat spreader
Glass plate

Corners have bolts with springs and wing nuts for leveling
holding aluminum heat spreader to maker slide plate.
Glass sits on top and is constrained X, Y on top

Works great

My frame and just about all the mechanical is assembled. I ordered a thermistor
kit for the heatbed. My next step is to order a Borosilicate glass plate. I am still
looking at how others have mounted the heatbed to the aluminum plate. I have seen
quite a few web pages on the assembly of the frame and mechanicall but none seem to
go into detail on mounting the heat bed. Their was one youtube video and that person
used stand offs and some screws and nuts for leveling. I was hoping to find maybe a
bill of materials and more detail like hardware sizes. I have also seen spring kits sold
on ebay as well. I will look at the wing nut idea with springs. I guess from some of the
pictures I have seen I need to get the heat bed about 1/2 inch or so above the aluminum
plate to have some clearance for clips to hold the glass plate to the heat bed.

Here are my bed hold down / leveler

Piece of aluminum threaded to accept bolt (or washer and nut)
Washers
Wingnut
Bolt

Du-Bro hardware at hobby shop should have all these except the aluminum L
(saw, file, tap for that)
Glass comes up easy to remove part or slip in another glass

Thanks for the pic.

That gives me a better idea on mounting. I am not too keen on useing springs but
I am going to order some to have on hand. I think I will stay with useing the large
paper clip clamps to hold the glass down for now. I am waiting for the glass plate
and will get varrious sizes of serews and expierment for now. Your pictures gave me
a better view of where the heat bed sits.

Mike Hoblinski

IMHO The big spring clamps (Acco paper clips) for holding dow the glass are a real pain.
The clips get in way of extruder or hit frame
Taking clips off helps but clamping and unclamping without clips a pain
I have found glass doesn't have to be held down, just constrained in X-Y

The springs you see are for leveling the bed -- it is very important.
I adjust the wingnuts to raise and lower bed on all four corners
to align it with Hotend nozzle.

Glass I am using is standard window glass
I chemically etched it for better grab for polymer to stick to.

Whatever -- your the expert!