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1408 » Cut simple SMT Stencil from common aluminum flashing on your CNC Animodule.com
Cut simple SMT Stencil from common aluminum flashing on your CNC Here’s a quick photodoc of how I made a reusable SMT stencil from some aluminum siding I had laying around. It’s very simple to assemble and works great. Dirt cheap too. I had picked up a roll of aluminum flashing a few years ago to flash some chimneys I rebuilt/repointed and was curious to see how it would hold up as an SMT stencil. To buy an SMT stencil frame is near $1000 so I didn’t have much to lose if it didn’t work out. I cut the frame out of some birch plywood since I had some handy. Really any sturdy frame would do the trick. You could easily glue one together out of some 1x or trim board. I put a thicker sheet of aluminum down underneath the flashing to give the CNC endmill something sturdy to cut against and clamped it down stretched and tight. My thought there was that If I cut straight on the MDF it might push on the flashing and bend it before it cut through. A 1mm endmill did the trick. Each pass was .05mm deep. I pulled the Flashing tight and stapled it to the frame. No rocket science here. I taped up the inside edges so no solderpaste could squeeze between the frame and the stencil. I had some old screen print hinge boards so I just attached this frame the same way I would a screen print stencil. The only fiddly part was aligning the first PCB. You have to push around a little and lift the stencil and fiddle with it a little bit. Once I get all the pads lined up correctly I hold it in place and trace around it with a thin tip sharpie marker. Then you place the PCB in the outline. If you have the height adjusted correctly the stencil is sturdy enough to hold the PCB in place while you print the Solderpaste on it. just hold the stencil frame down and it pushes down on the PCB. I used a flexible putty knife as a squeegee. It worked fine. Cleanup was a breeze. Just scrape it off, unscrew the stencil frame from the hingeboard and stick it in the corner till you are ready to do another run.

1083 colored screw
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552 Highly Liquid: MIDI Retrofits: MIDISpeak: Speak & Spell MIDI Retrofit
MIDISpeak 2 Talking Toy MIDI Retrofit $42.95 - MIDISpeak 2 In Stock. Assembly Service: $29.95 Qty: Support Forum - Blog Entries For installation service, contact Class A Electronics or Alien-Devices. Features Use MIDI to trigger thousands of sounds—words, word fragments, garbled speech, percussion and bizarre sound effects Trigger sounds in a controlled, repeatable manner Works with Speak & Spell (American or British), Speak & Read, Speak & Math, La Dictée Magique (French), Grillo Parlante (Italian), and Buddy (German) Use toy's headphone jack or speaker for audio output User-selected MIDI input channel Assembly service optional Sample Audio Sounds triggered from Speak & Math using a midi keyboard Speak & Math percussion loop Speak & Math loop repeated at increasing tempo Speak & Math sounds The phrase "say it", looped repeatedly at decreasing tempo The word "answer", using normal synthesis, then slow synthesis Operation ROM Mode Trigger synthesis with MIDI notes. 128 banks of sounds. Keypad Mode MIDI notes 50-89 control keypad buttons; notes 90-92 control "glitch" triggers. Kit Contents Printed circuit board All required components Standard MIDI jack & mounting screws Adhesive foam pad See Also Hook-Up Wire

448 HTML Ampersand Character Codes
These are character sequences that may appear in HTML documents; they represent sometimes useful symbols that are not part of the standard ASCII set or that would be difficult or impossible to type otherwise (e.g. the less-than sign, which would always be mistaken for the beginning of an HTML tag). Case is signinficant. The content of this table has been throughly tested. If the character that appears in the first column does not fit the description in the third column, your browser has a screw loose.

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