Masp 301 Report post Posted July 31, 2018 Totally unintentional. I decided to buy this cushion-like material for safely displaying my allosaurus bone on its stand. Backfired on me because I found out that my fossil was sticking to this material. Most of it peeled off fine, but there is some residue left over. Could anyone please tell me the safest way to take the rest off? It’s not a matter of scratching it off, the stuff sticks very well. Share this post Link to post Share on other sites
Masp 301 Report post Posted July 31, 2018 Also would be helpful if anyone knows a safer alternative for this cushion. The reason why I needed in the first place was because I wanted to prevent the bone from turning. I want it to stay in place Share this post Link to post Share on other sites
ynot 6,185 Report post Posted July 31, 2018 Glue some thick felt on it. Share this post Link to post Share on other sites
Troodon 11,238 Report post Posted July 31, 2018 That seemed like a reasonable solution to your problem. Did the foam side touching the bone have adhesive? Trying to figure out what's holding the residue to the bone. Share this post Link to post Share on other sites
Troodon 11,238 Report post Posted July 31, 2018 1 minute ago, ynot said: Glue some thick felt on it. I've used felt Share this post Link to post Share on other sites
Masp 301 Report post Posted July 31, 2018 7 minutes ago, Troodon said: That seemed like a reasonable solution to your problem. Did the foam side touching the bone have adhesive? Trying to figure out what's holding the residue to the bone. No I don’t believe so, the top foam tape is sort of like the kind you place on windows to seal... so I’m confused as to how it stuck like that. Heat? 90% of it pealed off fine otherwise. No damage thankfully Share this post Link to post Share on other sites
Troodon 11,238 Report post Posted July 31, 2018 Is it possible that there is some consolidant (PVA) on the bone that reacted with the foam and caused it to bond together Share this post Link to post Share on other sites
Masp 301 Report post Posted July 31, 2018 11 minutes ago, Troodon said: Is it possible that there is some consolidant (PVA) on the bone that reacted with the foam and caused it to bond together I’m not 100% sure, but yeah, it does seem consolidated. The only head scratcher is why did the rest of the material peel off so easily in that case? Share this post Link to post Share on other sites
Masp 301 Report post Posted July 31, 2018 Here are some better pictures Share this post Link to post Share on other sites
Masp 301 Report post Posted July 31, 2018 15 minutes ago, Troodon said: Is it possible that there is some consolidant (PVA) on the bone that reacted with the foam and caused it to bond together Looking at it again I believe that might be the case. The broken pieces seem to be glued together and then hardened. About it bonding, I’m not sure Share this post Link to post Share on other sites
Masp 301 Report post Posted July 31, 2018 These may help Share this post Link to post Share on other sites
Troodon 11,238 Report post Posted July 31, 2018 You may want to try a some acetone in a very small spot to see if it comes off. I don't know if there is paint on the bone, the solvent would take it off. So take it slow. Share this post Link to post Share on other sites
Masp 301 Report post Posted July 31, 2018 2 minutes ago, Troodon said: You may want to try a some acetone in a very small spot to see if it comes off. I don't know if there is paint on the bone, the solvent would take it off. So take it slow. Will do that, thanks so much Share this post Link to post Share on other sites
caldigger 4,563 Report post Posted August 1, 2018 Have you had this bone sitting against the foam for very long? That type of foam desentagrates over a short period of time ( sometimes within a year) and starts getting sticky as it is breaking down. The stubborn spots on your bone may be the highest pressure points when it was pushed against the foam. Share this post Link to post Share on other sites
Masp 301 Report post Posted August 1, 2018 1 hour ago, caldigger said: Have you had this bone sitting against the foam for very long? That type of foam desentagrates over a short period of time ( sometimes within a year) and starts getting sticky as it is breaking down. The stubborn spots on your bone may be the highest pressure points when it was pushed against the foam. Yes , I wanna say more or less for 2-3 weeks. Will it damage the bone, and what do you suggest I do to remove it safely? What you’re saying makes sense. Share this post Link to post Share on other sites
caldigger 4,563 Report post Posted August 1, 2018 I would try Frank's (Troodon) suggestion in a inconspicuous spot to see what happens. That seems like the best route. Although, I really don't have much experience at removing something off of a consolidated piece. You might try strong rubbing alcohol if the acetone is too strong of a solvent. I have used it to remove ink marks from pieces with good results. Please let us know of your findings. Share this post Link to post Share on other sites
DPS Ammonite 1,762 Report post Posted August 1, 2018 Before you try acetone try rubbing alcohol which is less likely to hurt the bone. You also might try some of the citrus oil based products like Goo Gone and De Solv It. Share this post Link to post Share on other sites
caldigger 4,563 Report post Posted August 1, 2018 7 hours ago, DPS Ammonite said: Before you try acetone try rubbing alcohol which is less likely to hurt the bone. You also might try some of the citrus oil based products like Goo Gone and De Solv It. That's a good idea! I have used Goo Gone to remove adhesive on many occasions with great success. Share this post Link to post Share on other sites
Troodon 11,238 Report post Posted August 1, 2018 I've thought of goo gone and have used it but never on bone residues. Its an easy method to try Share this post Link to post Share on other sites
Masp 301 Report post Posted August 1, 2018 I’m gonna give it a shot. Thanks so much everyone. This was one of those mini heart attack kind of situations I’ll post back in here when I have some good news Share this post Link to post Share on other sites
Masp 301 Report post Posted August 1, 2018 @DPS Ammonite @Troodon @caldigger Worked like a charm. You guys rock for the help. I tried using a small amount with the spray gel lightly on a cloth. Little by little, you’ll notice that it slowly starts to take effect. When it dries, maybe I’ll notice a spot or two that needs some cleaning, but the important thing is it works and it works well. What I noticed is that the foam got caught in the grooves of the fossils, or the highest pressure points as caldigger pointed out. May leave a small mark or two, but I’ll take it. The fossil is in one piece and unharmed. Share this post Link to post Share on other sites
caldigger 4,563 Report post Posted August 1, 2018 All the credit is due to DPS Ammonite for that one! Good job on the save. Are felt pads on the stand your next project? Share this post Link to post Share on other sites