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I would avoid expanding foam, there are health risks as well as the risk of breaking the specimen. I agree with Helena re coating the inside with paraloid B72 first. Then plaster of paris - or even better Jesmonite acrylic resin (it is more durable) - would be a good solid filler unlikely to pose health problems. You can set a threaded bar in the resin that you can use to secure the specimen to the base of your box with a nut on the bar on the other side of your box/shelf. With best wishes, Nigel. > Dear all > We're wanting to source some sea-urchin shells for a feely box at Aberdeen > Maritime Museum > > Anyone know of a supplier? > > Or do any of you lovely people have random, un-accessioned shells you might > be willing to pass on? > > Planning to fill the shells with expanding foam (gap filler) or plaster to > make them more resilient to grubby, grabby hands!.... Anyone had success with > something like this? > > Many thanks - Helen > > Helen Fothergill > Head of Collections > > Museums & Galleries > Education, Culture and Sport > Aberdeen City Council > (M, Th, F) Aberdeen Maritime Museum, Shiprow, Aberdeen, AB11 5BY > T: 01224 33 7704 > (Tu, W) Aberdeen Art Gallery, Schoolhill, Aberdeen, AB10 1FQ > T: 01224 52 3712 > > Aberdeen Art Gallery open: Tuesday - Saturday 10-5; Sunday 2-5 (closed > Monday) > Aberdeen Maritime museum open: Tuesday - Saturday 10-5; Sunday 12-3 (closed > Monday) > The Tolbooth museum open: Monday - Saturday 10-5 (closed Sunday) > Provost Skene's House currently closed to allow for the demolition of the > neighbouring building > www.facebook.com/AAGandM<http://www.facebook.com/AAGandM> > http://twitter.com/AbdnArtMuseums > > IMPORTANT NOTICE: This e-mail (including any attachment to it) is > confidential, protected by > copyright and may be privileged. The information contained in it should be > used for its intended > purposes only. If you receive this email in error, notify the sender by reply > email, delete the > received email and do not make use of, disclose or copy it. Whilst we take > reasonable precautions to > ensure that our emails are free from viruses, we cannot be responsible for > any viruses transmitted > with this email and recommend that you subject any incoming email to your own > virus checking > procedures. Unless related to Council business, the opinions expressed in > this email are those of > the sender and they do not necessarily constitute those of Aberdeen City > Council. Unless we > expressly say otherwise in this email or its attachments, neither this email > nor its attachments > create, form part of or vary any contractual or unilateral obligation. > Aberdeen City > Council's incoming and outgoing email is subject to regular monitoring. > --------------------------------------------------- This mail sent through http://www.easynetdial.co.uk