ZemcikO AL table
Release status: testing
| Description | This is my simple material spool holder.
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| CAD Models | Alibre 3D, STL, pdf
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Contents
Aluminum heated table for REPRAP sinuhed or mendel clone
Status: testing.
Description: Originally designed for my reprap sinuhed project. It is easy to make if you have access to drill a small home milling machine. The cost of input material is low. Published documentation is for sinuhed and Mendel project. Most parts are similar. Main difference is size of alluminium plate and position of heating elements. Compared to Table from printed circuit board this table achieves greater thermal Stability. For printing on Alu u will need kapton tape applied.
Bill of materials
Alu table
250x250x3 mm Alu plate (~5E)
16mm diameter clear PTFE 200-250mm long (2,5E)
100k thermistor (3E)
ABS printed parts (~10ccm) (0,5E)
Small piece of capton tape (0E)
Wires (2E)
Terminal Block (4x2) (1E)
Thermal glue 3,5ml (12E)
Compression spring 6*30mm 10N +- (2E)
8x M3*16 countersunk screw + selflock nuts (1E)
4x M4x40 hexa + 8x Wide washer +4x selflock nuts
1x M4x40 imbus + 1x self-lock nut (both less then 1E)
Heat elements
35x3x2000 mm Alu rod (~4E)
36x M3x8mm countersunk screw
36x M3 nuts (both less then 2E)
18x 6R8 3W resistors (6E)
Small piece of aluminium foil (0E)
Total +- 42 Euro
Wiring
6R8 resistors Preffer wired or vitreous resistors for 2 or 3W. They must be stable at 150°C. For one table u will need 18 resistors. Resistors need to be connected according to the drawing. The resulting electrical resistance is 1,51 Ohm. (I we ignore electrical resistance of wires). For 12V we get approximatelly 95W of electrical/thermal power.
5R7 resistors U will need less amout of these resistorsat the expense of a bigger load. (possibly shorter life of resistors). U will need only 16 resistors. Resulting electrical resistance will be 1.425 Ohm. For 12V we get approximatelly 101W of electrical/thermal power.
In both cases standard PC power supply with 15A on output, for whole reprap, should be enough.
Heat elements
Main part are made from 3mm Aluminium profile (3x30mm). Any Al profile with 3 and higher width can be used. Even 16mm diameter rod (if u realy like milling). 4mm would be better for increased rigidity. U will need to cut, mill and drill 36pieces plus small simple tablet for termistor. Its good to join 2 corresponding pieces together before drilling central hole.
Improvements
energy chains Testing.
Models and drawings
Al table
File:STLspool.zip STL files of printed parts of ZemcikO Al table.
3D model and photo of working AL table
TODO
This page is under contruction. Ill include complete documentation + production instructions
