Jump to content

What do you use to back thin fossils?

Recommended Posts

What do you use to back thin fossils? I have some nice pieces preserved in shale which came up pretty thinly. I'd like to reinforce to make sure they dont break.



Link to post
Share on other sites

You might consider a right-sized, shallow shadow box or picture frame (with enough space to permit insertion of something thicker than paper). Backing of cotton or even backboard would secure it in place. For added security, you could always add very tiny and short pins on the edges of the shale to keep it centered.

Link to post
Share on other sites

Is your shale pretty flat on the back?

Depending on what you want, you could mount to a board that is just slightly smaller than your plate so only the shale shows.


This fella may have some suggestions. @Ptychodus04

Link to post
Share on other sites

Thanks @caldigger, yes, I have done this a time or twenty.


I like cement backer board (the kind used for mounting ceramic tiles to floors and walls). I have also used plywood. To secure it to the backing, I use 100% silicone caulk. It has enormous sticking power.


I lay the piece on the board and mark with a pencil. Then, cut to size. Apply a liberal amount of silicone to the backing and set the piece on it. Put another board on top (make sure to protect the fossil with a towel or something) and weigh it down with something heavy. Let that sit for a few days and you are good to go. You can trim any silicone that oozed out the sides with a razor blade.

  • I found this Informative 4
Link to post
Share on other sites

Here are steps I took with a problematic slab. It might be a little extreme for your purposes; but I think it a viable approach if a strong large scale backing is needed.



  • I found this Informative 3
Link to post
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.

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.

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Create New...