Silverline Concrete Rubbing Brick 24 Grit (918552)

Product Information

Can't believe there isn't a local machine shop that couldn't fit a helicoil for you, it really is the proper way to do it tbh....... Re-positioning Craft Education and Training to Re-connect Artisans to Designers, The Journal of The Association of Preservation Technology, USA, (2012)

Bag rubbing is a simple technique where mortar is applied over masonry in such a way that its neither pointing or rendering, yet offers a sacrificial and protective coating to a wall, without having to extinguish its underlying character. Preparation

Superior heat resistance of JB Weld over Bondite is thus uncomfirmed ATPIT, (would require higher temperatures) but Bondite is a “fast” epoxy (4 mins) so gives insufficient working time and is probably weaker. This seems to be the norm for readily available epoxies. Small business issues: Firms cannot access sufficient financial support to fund the training of apprentices and up-skilling mature artisans. I used ring-pull tabs from Budweiser beer cans (“the King of Beers” yeh, right) as standard test pieces, which seemed somehow appropriate for testing

Dilute the solution first. This has various benefits including reducing the risk of damage, making the product go further, and making it safer to handle. (Use the concentrated solution once you’ve tested various levels of dilution.) You haven't yet told us what you intend to do about the scored cylinder liner yet, think that could be a bigger problem to solve, have you found oversize pistons and rings and a full gasket set?Legislative issues: Health and Safety is an unavoidable but significant cost. Conservation work generally falls within the construction industry and therefore carries responsibilities under current health and safety legislation; these are outlined principally under the CDM (Construction Design Management) Regulations. Re it being "the prop[er way to do it", aside from, tbh, not giving a tinkers damn about the "proper" way to do anything, I'd say it was analagous to doing a dental implant without trying a filling first. Would seem rather improper behaviour in a dentist.

Architects like Stephen prefer curved arches to flat ones but many self-builders choose the latter for reasons of economy. They are also considered just as traditional as curved arches in some parts of the country. If you are building a flat window head with a soldier course, however, you should again be wary.If tapping doesn't work, casting threads around a suitable greased bolt (if I can get one) might be an option, though might end up plugging the hole permanently. Personally I think it's a none starter, it may well resist the heat, it'll be protected by the plug after all, think the trouble you'll have is trying to cut a new thread, there simply won't be enough surface area for it to bond too and resist the cutting action of the tap. In my hands these (cheapo hardware store) soldering irons give insufficient heat for reliable soldering, so I repeated the tests with a 100W (cheapo hardware store) soldering iron which was easier to arrange (and probably also gave more consistent, though not necessarily greater, heating). For this series I also measured the temperature of the exposed part of the iron, which reached a maximum of around 150 to 170C. The mortar should be made using sand appropriate to the masonry being worked on. A 50/50 sand such as CLS30 (50/50 coarse and fine sand – supplied by Cornish Lime) is the most popular for this type of work; while CLS35 (a fine clean washed plastering sand) has been used to good effect on numerous projects, where a coarse sand wasn’t appropriate to the masonry. View our range of coarse and fine sands.