1x 2x55mm decently strong string that doesn’t offer any stretch/give
Double sided Adhesive(for the Nozzle pulley):
1x “Clear Mounting Squares” by Scotch
– You don’t necessarily need to use this version or brand of adhesive, but it has a really good thickness of 1mm and width of 17.4×17.4mm which is perfect for the Nozzle pulley, and sticks great to PLA. I recommend something thicker than just “double sided sticky tape” as it is just too thin and doesn’t stick well to PLA at least… I’ve tried it.
4x 624z ( 13x5mm with 4mm inner diameter )
2x M4 x 16 mm screws
3x M4 x 25mm screws
(You should already have 2x M4 x 50mm screws holding your idler block in place on your Wade’s extruder, if not you will need them)
18x M4 (4.3 x 9 mm) washers
1x M8 lock washer
1x M8 nut
5x M4 lock nuts
– This is one thing I can’t currently help with (although if enough requests come in I will work a deal out with a distributor I know in the area)…. as the other day I went back to Rewe to grab up all they had left and found out that they dont even offer this item anymore! It was a generic brand that Rewe had made in China anyway, so I am sure there are others out there with the same specs. But have no fear… as of this writing I am currently working on a parametric version of the BotBQ extruder so that you can customize it to whatever size hamburger housing you have available to you.
– The hamburger housing I have/use has a 41mm inner diameter and a 51mm outer diameter with a height of 15cm. It came with several different nozzle tip shapes and sizes but they all needed a lot of pressure to extrude correctly so I just went with the adapter only as the nozzle I use currently, although there is lots of room for improvement. I will experiment with different nozzle sizes/shapes later on.
1x Glasschneideplatte (glass cutting plate) – Kesper
– This was something I was a little worried about finding, but after a little searching at our local Kaufland I found a 4mm thick 20x30cm glass cutting plate that is a perfect fit to cover a standard 20x20cm RepRap hotbed. I recommend removing your current glass surface from your hotbed instead of putting this plate directly onto it just so you dont have to worry about “glass on glass hate”. I also wrap a paper towel over it just to add some grip to the surface as I don’t trust the glass to hold the greasy burger meat in place while printing at this point… This item will be obsolete eventually once I have the real grilling surface in place that the BotBQ will print directly onto.
– The reason why you need this now is because the BotBQ extruder in its current form needs that additional space due to how much it extends out off of the extruder block. In future variations I expect the config to change drastically, but for now it is what it is.
Thats it for the BotBQ Extruder bill of materials. The BOM will change, probably a lot, over the coming months so please stay tuned to this post for updates.