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3D machining for plasterwork

Scan, determine original shape, and repair.
  (+3)
(+3)
 

You have a Victorian house. The coving has a gap where some pipes used to run. The ceiling rose has been painted so many times it has lost most of its shape. These are tricky jobs - you are removing layers of paint which may be tougher than the plaster beneath, particularly if it has detached from the laths beneath. These are all jobs you have to do with your arms above your head, which hurts.

A 3D scanner measures the coving and the ceiling rose, and calculate the shape for a matching repair, or a restoration to the original shape. If necessary, it scans the adjacent areas to get a more accurate average of any repeating pattern. It can use paint stripper and a scraper or a machine tool to remove the paint (paint stripper probably generates less dust). It fills any gaps.

The deluxe version has a printer. This can repair missing bits of old wallpaper with a matching patina.

—Richard K, Sep 29 2026

https://www.science...i/S2352710225018327 This one is about replacement for worn stone parts in exteriors [pocmloc, Sep 29 2026]

https://bluprints3d...ritage-architecture Here's an example of scanning and printing interior elements [pocmloc, Sep 29 2026]





       This is normally done with silicone rubber moulds, but I would be surprised if a scanner and printer setup had not at least been tried by some high-end restoration firm
—pocmloc, Sep 29 2026
  

       I am restoring a Victorian house, and I look at the various websites. You can still get Anaglypta and Lincrusta textured wall coverings. People do repairs using silicon moulds, and ones made using cornflour. There is a strong urge to do any repairs with traditional techniques. I have not seen anyone using 3D printers to make patches for Lincrusta or Anaglypta, though it would be easy to do.   

       A friend of mine had his ceiling come down because of a leaking washing machine. He got his ornamental Victorian ceiling completely re-done on the insurance. Have you ever seen a new ceiling with rich plaster coving? It is so sharp it looks wrong to those of us used to seeing it with a hundred years of paint on it.
—Richard K, Sep 29 2026
  

       3D scans can be used to generate sets of moulds for the plaster. In fact ai could probably create them from the scans - it's hardly half baked.... now if you were to propose the generation of a set of plaster attachments that made it look like a great hairy foot had just penetrated your ceiling, I'd launch into full approval mode.
—xenzag, Sep 29 2026
  

       "Unless, of course, you have studied Anaglypta" ... Inigo Montoya - The Princess Bride
—normzone, Sep 29 2026
  
         


 

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