--- {"title": "How to clean scanned drawings for enclosure designers in 2026", "description": "Steps to clean a scanned enclosure drawing: prepare the scan, trace lines into clean vectors, check the result, and avoid common mistakes.", "url": "https://texhouse.us/how-to-clean-scanned-drawings-for-pcb-enclosure-designers/", "date": "2026-10-22"} --- Steps to clean a scanned enclosure drawing: prepare the scan, trace lines into clean vectors, check the result, and avoid common mistakes. Scan the drawing flat at high resolution, straighten and crop it, remove the background and smudges, check the scale against a known dimension, then trace the lines to vectors and export in the format your CAD program reads. | Option | What it does | Fee | |---|---|---| | VectorMagik | Traces a picture into vector shapes using its own engine. [^1] | Free for everyone; business use needs a licence (PolyForm Noncommercial 1.0.0) [^1] | | Other tools to compare | Check each tool's own page for what it does with scanned drawings | Check the tool's own pricing page | ## What you need before you start Before you clean a scanned drawing, have the original scan at the highest resolution you can get, saved as a PNG, JPEG or TIFF file. Pull out the key dimensions from your design notes, such as the enclosure width, cutout sizes and mounting hole positions, because the cleaned drawing has to match them. Decide which lines matter. The outline, cutouts, bosses and fold lines are what the fabricator and the CAD model depend on, while stains, handwritten notes and grid marks are not part of the design. Have your target format ready, such as DXF for a CAD program or SVG for a vector editor. Check which format your fabricator or CAD tool accepts before you start, so you do not have to convert twice. A ruler or a known dimension printed on the page helps you check scale after cleaning. Keep the unedited original so you can compare against it at each step. Finally, set up a working folder with the scan, your cleaned versions and a short note of any scale factor you used. ## Step by step 1. Scan the drawing flat on a scanner at the highest resolution you can. A photo taken at an angle distorts the lines and makes them harder to trace. 2. Straighten and crop the scan so the drawing sits square on the page and the borders are gone. 3. Remove the background, such as paper colour, grid marks or a tinted sheet, so only the ink lines remain. 4. Clean smudges, pencil notes and fold marks that are not part of the enclosure design. 5. Adjust the contrast so the lines are solid and the gaps between them are clear. 6. Trace the lines into vector shapes. 7. Simplify the curves gently, so small arcs keep their shape. 8. Check the nodes and corners on the traced result, and fix any that drift from the original. 9. Compare the trace with the scan, and check one known dimension against the printed scale. 10. Export in the format your CAD program reads, then open the file there to confirm the size. ## Tools that can do it Several tools can help with parts of this job. Each one does what its own page says it does, so check the details there before you choose. VectorMagik is made by the team that publishes this site. It traces a picture into vector shapes using its own engine. [^1] Simplifying the curves joins up pieces of curve that sit next to each other, so the drawing has fewer, smoother lines. You can control how strongly this happens, and an automatic setting picks the strongest smoothing that still keeps the drawing looking like the original. [^1] After converting, you can move or delete curve nodes and round individual corners. [^1] You can limit the result to between 1 and 64 colours. [^1] You can click shapes to delete them, such as a background, or merge two shades into one. [^1] To check the trace against the scan, you can compare the vector with the bitmap side by side, or flip between them with B and V keys. [^1] You can save the result as SVG, PDF, EPS, AI, DXF, EMF or PNG. [^1] Downloads exist for Windows x64, macOS (Apple Silicon and Intel), Linux x64, plus a browser version. [^1] A browser version runs in the web browser using the same engine. [^1] Other tools can cover parts of this job too. Check each tool's own page for what it does and what it costs before you decide. ## Common mistakes to avoid Tracing a low-resolution scan is a common mistake. Blurred edges often trace as wobbly lines, so rescan at a higher resolution first. Skipping the straightening step causes trouble later. A skewed drawing puts holes and cutouts in the wrong place relative to the edges. Leaving the scale unchecked is another error. A cleaned drawing can look right on screen and still be the wrong size, so measure one known dimension against the original. Over-simplifying curves can round off small features such as tight corners and mounting holes. A sensible habit, though not from any source: simplify a little at a time and check the result against the scan. Keeping more colours than the drawing needs leaves extra shapes to clean up. Limit the colours early, then remove any background shapes that remain. A simple habit is to do this on a copy, not the original. Saving over the original file removes your reference. Keep the scan untouched and work on copies. ## Frequently asked questions ### How do you clean a scanned enclosure drawing before tracing it? Start by scanning the drawing flat at the highest resolution you can, then straighten and crop the image. Remove the background and any smudges, and adjust the contrast so the lines stand out cleanly. Check the result against a known dimension on the printed page before you trace or export anything. Keep the original file untouched so you can go back to it if a step goes wrong. ### Is VectorMagik free for enclosure designers? VectorMagik is free for everyone, and business use needs a licence under PolyForm Noncommercial 1.0.0. [^1] The licence text sets out the terms, so read it before using the tool for paid design work. [^1] ### Can VectorMagik export a cleaned drawing as a DXF file? Yes, the result can be saved as DXF along with SVG, PDF, EPS, AI, EMF or PNG. [^1] DXF is a format many CAD programs can open, so the traced lines can move into a CAD program for the enclosure design. Check that your CAD program opens the file at the expected scale before you rely on it, and use the side by side view to compare the trace with the scan first. ### Does VectorMagik run on Linux and Windows? Downloads exist for Windows x64, macOS (Apple Silicon and Intel), Linux x64, plus a browser version. [^1] On Windows there is an installer or a portable zip, and on Debian or Ubuntu there is a .deb file, all from GitHub releases. [^1] The browser version runs in the web browser using the same engine. [^1] Separate Windows and Linux downloads exist as well, so you can pick the one that matches your computer. ### What does the colour limit do for a scanned drawing? You can limit the result to between 1 and 64 colours. [^1] A colour limit sets how many colours the result can use. You can also select a shape to delete it, such as a background, or merge two shades into one. [^1] Compare the trace with the scan before you export, to be sure nothing needed was lost. Free for everyone; business use needs a licence (PolyForm Noncommercial 1.0.0). [^1] - [Visit VectorMagik](/go/start-vectormagik) ## Sources [^1]: VectorMagik's own description of itself (the product of this site's publisher) (/go/start-vectormagik)