Module library

EXTF-7.5 extrusion format

Dimensions, parts, power and side-panel templates for the 7.5 inch extrusion format.

Dimensions and parts

Dimension drawing of an EXTF-7.5 module panel: a rectangle with four slotted mounting holes, 250mil and 500mil offsets, 190mil hole size and 900mil clearance to the PCB top and bottom.
EXTF-7.5 panel dimensions, 5.5 inch wide
Dimension drawing of a narrow panel with a 1650 by 2112.5 mil power supply PCB, a 260mil toggle switch hole, 120mil M3 mount screw holes and the power barrel 1462.5mil down.
Power supply panel dimensions

This page contains information about the new Extrusion Format.dimensions
part list

power supply spec.

Dimensions.
Here is an example of EXTF-7.5, 5.5" wide module.

Here is an example of a power supply.
The power barrel is 1.462" down from the front panel top portion.

Part list.
*80/20 Inc T-Slot 10 Series 10-32 Slide-In Economy T-Nut #3276

*FEET SCREW: 10-32 X 1/2" PHILLIPS PAN
RUBBER FEET + PCB + SLIDE NUT.

*MOUNTING SCREW: 10-32 X 3/8" PHILLIPS PAN
PCB + SLIDE NUT.

1X1 EXTRUSION (LEVEL 1 PCB)-DESKTOP
2X1 EXTRUSION (LEVEL 2 PCB SANDWICH)

*M6 TAPPING TOOL REQUIRED FOR EXTRUSION PREPARATION.

*M6 SCREWS: M6X12mm FOR SHEET SIDES, M6X20mm FOR THICKER SIDES.

Two silver 10-32 x 1/2" Phillips pan head screws above a Tool Outlet retailer logo.
10-32 x 1/2 inch feet screws
A pile of small round black rubber feet, each with a center hole.
Rubber feet
A heap of silver Phillips pan head machine screws.
10-32 x 3/8 inch mounting screws
A single black oval slide-in T-nut with a threaded hole in the middle.
10-32 slide-in T-nut
Line drawing of a square T-slot aluminum extrusion with an oval slide-in nut entering the slot, and a red arrow showing it sliding along the channel.
T-nut entering the extrusion slot

Tools, side panels and power

Two silver M6 thread taps lying side by side.
M6 tapping tool
Outline drawing of a pair of tall side panels with rounded corners, each with a small hole at the top and bottom. The left one has an extra larger hole near the top.
Side panel template
A green three position screw terminal block with pins underneath.
Three-position screw terminal
A green circuit board layout for a 12V power supply: a 12V-24V power jack, an AXA00BB18-L converter marked +12V, COM and -12V, a 47uF 35V capacitor and three screw terminal outputs.
Power supply board layout

SIDE PANELS FOR 1X1 EXTRUSION. EXTF-7.5
Below is an example of a pair of side panels for EXTF-7.5. The pdf contains all the dimensions needed to drill your own holes.
One side gets a hole for the power barrel.

Power supply specs.
So far I am using screw terminals to power connect multiple modules. This may change later, but it would still be compatible with the screw terminals.

PCB POWER:
TAYDA, DG128 (DG128-03P) (Just an example)
Manufacturer: DEGSON

+12v, COM (Ground), -12v. To all designers: please label everything on the pcb to avoid burning circuits.
Here is an example of the labeling I use. This will power 3 items. Some of the modules have another screw terminals to allow daisy chaining modules with power. This power supply can be found on the braids EXTF file on the survival page.

Powering modules involves cutting and stripping your own hookup wire. 14-16 gauge is a good size. I use Red, Black, Yellow or Green or White (Ground) wiring color scheme. Red would be Positive, Black is Negative, and the other color is Ground.

On some of the modules that have on board DC-DC converters. I put input 'DC solder and jumper' to next board locations, so that one power brick was used.
The picture below shows those options.

Please let me know if you design new modules in this format. I can post and promote your stuff here on this site.

Extrusion Format Guide Lines.

EXTF-7.5: This means the panel is 7.5 Inches in height. The physical extrusion case height is 8", rail to rail.

Please keep the width of your panel in 0.0" or 0.5" increments. So one module is 5.5" width, 2.5" width, 4" width, etc. Please don't make a 4.365" wide panel. It will make extrusion cutting easier, and more accurate. Remember to give your extrusion cut a little bit of room, like for a module width of 5.5", i might cut 5.55" worth of extrusion for a single desktop-one module design.
Of course all of this 'width' guide line is if you would like to share room with my designs or someone else's modules.
If you make your own closed design, where modules will not be exchanged ever (like euro format), then do what you want.

The same goes for height. There will one day be EXTF-8.5, EXTF-9, EXT-8.0. Just keep it in 0.0"-0.5"

For Example EXTF-9.5: Panel would be 9.5 inches in height, Extrusion case height would be 10" rail to rail. Side rails would not be hard to calculate. The only reason to go higher in height would be to accommodate more controls.

Why did I even bother with all this?

Luxury control was needed for some fantastic circuits out there.