Jump to content
IonRocks

Tortoise shell repair

Recommended Posts

IonRocks

Well I finally started repairing the shell I got in Denver. Starting with the bigger parts, with obvious placement and working out.

Currently holding a part as the glue dries 

 

Im using a 5 minute epoxy on these two sections, mainly due to difficulty holding long enough for a 30 minute or two hour one. The shell is not as yellow as in this picture.

 

warning, this will be a long documentation of my work as I go along

image.jpg

Share this post


Link to post
Share on other sites
LordTrilobite

Nice!

Share this post


Link to post
Share on other sites
IonRocks

After borrowing a similar shell to study, as well as looking at lots more online, I've found that my saving grace is the "skeleton" of the tortoise, which is part of the shell. For example, the pseudo ribcage helps a lot. (I am although not informed on the proper terminology of the parts of these shells :)

 

Along this side you can maybe see what I am talking about.

image.jpg

Share this post


Link to post
Share on other sites
Ptychodus04
8 minutes ago, IonRocks said:

Im using a 5 minute epoxy on these two sections, mainly due to difficulty holding long enough for a 30 minute or two hour one. The shell is not as yellow as in this picture.

 

 

Hopefully, you're OK with your glue joints failing in around 20 years. 5 minute epoxy just doesn't hold up over time. You're better off balancing the bottom piece in a sand tray and using slow epoxy while the top piece is held by gravity. I've also used large rubber bands to hold the pieces together when using a slow set adhesive.

Share this post


Link to post
Share on other sites
IonRocks

Well I guess time will tell. 

I had heard about the downsides of the 5 minute epoxy, that's why I chose to use if for only these two spots. The plan is that these two chunks will be joined to other currently not in place shell sections, by a much slower epoxy.

 

Could you tell me a bit more about the sand tray? I'm having difficulty visualizing 

Share this post


Link to post
Share on other sites
caldigger

Looks to be an interesting project Parker.  Is it a complete shell (all sections there)?

Share this post


Link to post
Share on other sites
IonRocks

Not complete sadly, I've got lots of it, but I am missing some along the top at the back, and at the very front

Share this post


Link to post
Share on other sites
caldigger

Where is this one from?

Share this post


Link to post
Share on other sites
IonRocks

South Dakota

Share this post


Link to post
Share on other sites
Mike from North Queensland

One of the tricks for holding fossils while the glue dries is to use elastic bands and use sand as a bed as that can be shaped.

The fossil can either be inserted into the sand or supported under to hold in place.

 

Mike D'Arcy

Share this post


Link to post
Share on other sites
RJB

Looks like a very fun and exciting project to me.  Best of luck.  Im sure you will do a good job.  Waiting to see the finished project. 

 

RB

Share this post


Link to post
Share on other sites
IonRocks

Thanks RJB

Share this post


Link to post
Share on other sites
FossilDudeCO

Looking good thus far!

Best of luck :)

Share this post


Link to post
Share on other sites
IonRocks

Update of how it's looking after working all day. 

 

If anyone might provide me insight as to where the two parts of shown might go, that'd be helpful. A line runs on the other side of the rib. So it's a spot where the rib lines up with the edges of two scutes. 

 

These two are odd with the large boney chunks at the end

 

IMG_5620.JPG

IMG_5621.JPG

Share this post


Link to post
Share on other sites
Barerootbonsai

Best of luck.  Very interesting.

Share this post


Link to post
Share on other sites
LordTrilobite

That looks like so much fun. Good luck!

Share this post


Link to post
Share on other sites
IonRocks

Some interesting semi-symmetrical damage at the back.

These two parts (on the right hand side of the shell, nearest to the bottom, possibly right peripherals 9 and 10) where hard to place due to the condition of the rest of the back but I am happy with how I chose to put them.

image.jpg

Share this post


Link to post
Share on other sites
Ptychodus04

The larger of the two mystery bones looks like a section of plastron to me. It would go somewhere on the bottom.

 

For the sand tray, imagine a small sandbox where the specimen is jammed into the sand in order to provide support.

Share this post


Link to post
Share on other sites
IonRocks

Well they are corresponding parts. I think I have all the plastron that still exists attached, missing the left front section of the split front on the plastron. I think those two are parts of the front of the tortoise, likely left and right pleural 1, possible 2

Share this post


Link to post
Share on other sites
IonRocks

Here is the shell and in the next post the remaining parts (and a large assembled part that will eventually be attached to the front) 

i never mentioned I don't think, the shell is about 11 inches long

IMG_5628.JPG

IMG_5631.JPG

Share this post


Link to post
Share on other sites
IonRocks

Remaining parts (front and back) 

 also the larger assembled chunk to be attached.

 

I may end up modifying the current curve at the front before hand to make it fit better

IMG_5625.JPG

IMG_5627.JPG

IMG_5626.JPG

Share this post


Link to post
Share on other sites
FossilDudeCO

looking good!

cant wait! :popcorn:

Share this post


Link to post
Share on other sites
IonRocks

I would like to say that so far this has been my most enjoyed prep (only out of a few dozen) possible it is due to the difficulty it is mess up

But I simply enjoy the satisfaction of finding a new connection of parts that before seemed ridiculous (like most of the front of this tortoise) 

I also appreciate that it doesn't produce copious amounts of dust. 

 

Hopefully I can find (and afford) more things like this to prep in the future. 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Recently Browsing   0 members

    No registered users viewing this page.

×