Jump to content
Maestronet Forums

A scraper for edge rounding


Jeremy Osner
 Share

Recommended Posts

What tool do you use for rounding the edges of your plates? I made a scraper that is working very nicely, it's the first time I have done this so I'm not sure what other techniques exist. I cut the scraper curve with a hole punch for paper; it handled the spring steel just fine. In the photo the scraper corner looks very close to the rib -- I did not have any trouble keeping it from making contact with the rib, but I think I will file that corner away before I use it again. The edge that came off of the hole punch is nice and sharp and did not need any burnishing. The tool only cuts in one direction -- it seems likely that was probably the side that was facing down when I punched out the hole, will confirm this if I make another one.

image.png.41e1bb3a4ccfc172572a9f2da9d6ad68.png

Link to comment
Share on other sites

43 minutes ago, Jeremy Osner said:

What tool do you use for rounding the edges of your plates? I made a scraper that is working very nicely, it's the first time I have done this so I'm not sure what other techniques exist. I cut the scraper curve with a hole punch for paper; it handled the spring steel just fine. In the photo the scraper corner looks very close to the rib -- I did not have any trouble keeping it from making contact with the rib, but I think I will file that corner away before I use it again. The edge that came off of the hole punch is nice and sharp and did not need any burnishing. The tool only cuts in one direction -- it seems likely that was probably the side that was facing down when I punhed out the hole, will confirm this if I make another one.

image.png.41e1bb3a4ccfc172572a9f2da9d6ad68.png

for my work I used a fine cut file , after running a finger plane over the ridges. The underside can be trimmed with a knife before glueing on the rib . Scrappers like this are great , I like the paper punch idea! on those end grain area of the spruce it would be real easy to develop chatter along the edge . 

Link to comment
Share on other sites

44 minutes ago, James M. Jones said:

for my work I used a fine cut file , after running a finger plane over the ridges. The underside can be trimmed with a knife before glueing on the rib . Scrappers like this are great , I like the paper punch idea! on those end grain area of the spruce it would be real easy to develop chatter along the edge . 

Agree

Link to comment
Share on other sites

I too use small planes and files to rough-radius the edge. For finishing, I use a small block of wood about 2 inches long and about 1/2" square, with a U shaped channel  about 6mm wide cut along the length I glued a piece of cloth backed sandpaper into the channel, held to shape with an appropriate diameter dowel so the sandpaper conforms to the channel shape.

I find scrapers tend to chatter too much on the end grain, especially on the top plate.

Link to comment
Share on other sites

3 hours ago, Jeremy Osner said:

Thanks all! I have only done the maple so far -- when I work on the front I will watch for chatter on the end grain and switch to a knife + file if I see any. I cut a bevel on the rib side of the plates before gluing, with fingerplane.

A scraper works well for maple edges, but much less for spruce, even if used with very little pressure it can still be used if you want. In any case, I think that a flat scraper is better suited for this purpose, because it allows you to better understand where you are cutting, while with a semicircular curve it is more difficult to understand and therefore to control it. It is also much more difficult to sharpen it satisfactorily and keep it that way (very sharp). But maybe it's a matter of getting used to and solving the above problems if you think it's worth it.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.


×
×
  • Create New...