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G'day Barry,
Photo no 2 shows the original castor base which I didn't use as I switched to fork bolt. It also shows the clamp fitted which I haven't used yet, I just position the brick with the IT and move on, no need to clamp.
One thing I have asked about but not really found a solution is when I move the tool out of the way the brick does move slightly but because the mortar is wet there is flex and it goes back. When laying bricks very high on the dome, and actually needing the clamp to hold till dry, I'm not sure how getting the IT out will go. I have thought I could sand some metal away below the centre point??
I am only on level 4 of the dome so far. I didn't sleeve the hole for the fork bolt. Additionally I'm only using a 50 mm (2 inch) floor paver so I didn't have much height to work with. I drilled a very tight hole in the piece of timber you can see in photo no 1 (the smaller brown piece screwed to the white piece) and used large washers against the timber either side. I used 2 nuts to lock together underneath and have found the whole assembly tight enough so far.
The 2 nuts are in a hole in the white piece of timber which is smaller than the removed pavers to allow packing spacers to finalise the position in the centre.
I like the fact that Chach can simply remove his tool and I guess that would definitely require sleeving, and sufficient height.
In photo 1 you can see a square piece of metal welded on the shaft. The reason for that is a piece of timber etc can be clamped on at the correct height and prevent the brick level drooping as the row approaches the arch. Apparently this can be a problem, look up " dreaded droop". I haven't used the feature yet but may do in future. I do however have welders, a lathe and other machinery which makes life easy when making the IT.
Hope that helps, let me know if you have other questions.
Regards
Greg
Photo no 2 shows the original castor base which I didn't use as I switched to fork bolt. It also shows the clamp fitted which I haven't used yet, I just position the brick with the IT and move on, no need to clamp.
One thing I have asked about but not really found a solution is when I move the tool out of the way the brick does move slightly but because the mortar is wet there is flex and it goes back. When laying bricks very high on the dome, and actually needing the clamp to hold till dry, I'm not sure how getting the IT out will go. I have thought I could sand some metal away below the centre point??
I am only on level 4 of the dome so far. I didn't sleeve the hole for the fork bolt. Additionally I'm only using a 50 mm (2 inch) floor paver so I didn't have much height to work with. I drilled a very tight hole in the piece of timber you can see in photo no 1 (the smaller brown piece screwed to the white piece) and used large washers against the timber either side. I used 2 nuts to lock together underneath and have found the whole assembly tight enough so far.
The 2 nuts are in a hole in the white piece of timber which is smaller than the removed pavers to allow packing spacers to finalise the position in the centre.
I like the fact that Chach can simply remove his tool and I guess that would definitely require sleeving, and sufficient height.
In photo 1 you can see a square piece of metal welded on the shaft. The reason for that is a piece of timber etc can be clamped on at the correct height and prevent the brick level drooping as the row approaches the arch. Apparently this can be a problem, look up " dreaded droop". I haven't used the feature yet but may do in future. I do however have welders, a lathe and other machinery which makes life easy when making the IT.
Hope that helps, let me know if you have other questions.
Regards
Greg
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