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process_stencils [2022/05/23 10:54] – benh | process_stencils [2022/05/23 11:24] – Updated stencil fab process. benh | ||
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**Note:** This process is detailed in the LPKF ProtoLaser' | **Note:** This process is detailed in the LPKF ProtoLaser' | ||
- | Before you start, you'll want to make sure that you have your solderpaste gerber files ready, along with your piece of polyimide. Note that we (typically) have either full 8x12 sheets, or a 24" | + | Before you start, you'll want to make sure that you have your solderpaste gerber files ready, along with your piece of polyimide. Note that we (typically) have either full 8x12 sheets, or a 24" |
- | - Log into the ProtoLaser. Turn on the tool and/or start the software if they are not already on and running. Brush off the processing surface; it needs to be clear of debris so that the polyimide can sit flat. | + | - Log into the ProtoLaser. Turn on the tool and/or start the software if they are not already on and running. Brush off the processing surface; it needs to be clear of debris so that the polyimide can sit flat. Place your polyimide sheet onto the processing table and tape it down. |
+ | - It's advisable to tape it down as snug as possible. Unlike FR4, this will flap around during processing if it's not secured to the table. Taping all four edges works well. | ||
- Start a new project (" | - Start a new project (" | ||
- Select the " | - Select the " | ||
- Select " | - Select " | ||
- | - " | + | - " |
- | - At this stage, we want to position the design in the software so it cuts correctly | + | - Note that you need one stencil per side of the board, so only select a single gerber file. Make sure it is set to the correct layers (either SolderPasteTop or SolderPasterBottom) before clicking " |
- | - If you have a full sheet, click-and-drag to select | + | - If you see a warning about nothing |
- | - If you have a specially-cut piece (as in, one that isn't the size of the bed), click over to the "Processing" | + | - If you have multiple solderpaste gerbers to import (i.e. multiple stencils to make, e.g. a PCB with components on both sides, or multiple PCBs), move your design out of the way (select |
+ | - After importing all your designs, move them around (left-click-and-drag to select them individually, right click, "Move Object") to position them as you'd like them to be cut. | ||
- " | - " | ||
- | - Press the green play button to begin processing. Follow the steps as requested. | + | - Move to the " |
+ | - Turn on the pilot laser (black laser button in the toolbar). | ||
+ | - Double-click on the processing area to move the pilot laser. Position it where you'd like the top-right of the design to sit on the polyimide sheet. Note that you want at least 1" of space between the edge of the sheet at the processed design. | ||
+ | - Right click > " | ||
+ | - Move the pilot laser (double-click) to the corners of your design to confirm that the >= 1" boarder exists for all four edges. If not, you will have to either move the design again (with the " | ||
+ | - Once the design is properly placed within the polyimide, press the green play button | ||
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