7mm Ressaldar's Workshop - a paintshop diversion
- Thread starter Ressaldar
- Start date
Phill Dyson
Western Thunderer
Like the class 33 Mike 
.......very nice, very subtle 
........I would be tempted to give the window a bit of a clean though 
.......very nice, very subtle ........I would be tempted to give the window a bit of a clean though
Ressaldar
Western Thunderer
Like the class 33 Mike
Hi Phill,
glad you like it - I have 'cleaned' the windows - to some extent, but it does not show too much on the other photos
but I'll get the windowlene out tomorrow
cheers
Mike
Phill Dyson
Western Thunderer
I quite like the dirt on the headcode panel window though, I think I would be tempted to leave that as I don't think anyone would bother to clean those windows as oftenHi Phill,
glad you like it - I have 'cleaned' the windows - to some extent, but it does not show too much on the other photos
View attachment 11089
but I'll get the windowlene out tomorrow
cheers
Mike
Phill
Ressaldar
Western Thunderer
Hi Ian,
glad you like it - especially as the blue is green!
I quite like the dirt on the headcode panel window though, I think I would be tempted to leave that as I don't think anyone would bother to clean those windows as often
Phill
Hi Phill,
that thought had also crossed my mind and I'd decided to leave well enough alone on the headcode boxes
Hi Alcazar,
agreed, I'll be getting the polishing cloths out later this morning and see what elbow grease I have left after doing a spot of fencing - requirement by SWMBO
cheers
Mike
Ressaldar
Western Thunderer
Ressaldar
Western Thunderer
having mentioned the 'forming/extrusion' tool on another post, I thought that I should continue mention of it here.
As I said earlier, the need for the tool arose from the requirement of over 20' of actual coping for the boundary wall that is currently under construction on the layout. I thought of timber strips, but the top surface would need to be shaped in some way and that would be difficult without using a router etc, which I do not have in the workshop. So I hit on the idea of extrusion, using the 'air drying' modelling clay that I have had, unopened, for a couple of years. Then I came up with a method using Lego blocks as the main body and a piece of 30 thou brass with the shape filed out, fixed across an aperture within the Lego body.
the 'box', plus ram on the right with the white end and the 'forming plate' between the grey and white blocks in the foreground.
showing the end of the 'forming plate' and it's keeper block. The yellow block was cut with a junior hacksaw and as can be seen by the marks on the green 'button' in front of the plate, this row of buttons had to be cut back and also form a support at the bottom of the plate against the thrust of the ram
the feed chamber with lids removed. The blue block with the white plasticard face acts as a stop for the clayat the top of the chamber.
the chamber with end stop in place
end aperture with ram alongside. The white plasticard allows the ram to slide rather than bump along on the 'pips' - ram shown right way up.
ram and top covers shown in position in feed gap
side view of previous shot.
Those of you that have made it thus far will have noticed evidence of trials having taken place and as with most trials, this one did not go too well - in as much as the clay was used straight out of the pack and the forces required to push it through the former were somewhat larger than I had anticipated, so i added some water to another sample and pushed away, this time, it was too soft and did not 'hold together'. So further experiments with mix ratios are required. Also the clay that I have has a fibre content and this may be playing a part in the procedings, so I shall be trying other clays as well to come up with an acceptable mix solution.
I also need to buy some replacement Lego blocks before the grandaughter's next visit
regards
Mike
As I said earlier, the need for the tool arose from the requirement of over 20' of actual coping for the boundary wall that is currently under construction on the layout. I thought of timber strips, but the top surface would need to be shaped in some way and that would be difficult without using a router etc, which I do not have in the workshop. So I hit on the idea of extrusion, using the 'air drying' modelling clay that I have had, unopened, for a couple of years. Then I came up with a method using Lego blocks as the main body and a piece of 30 thou brass with the shape filed out, fixed across an aperture within the Lego body.
the 'box', plus ram on the right with the white end and the 'forming plate' between the grey and white blocks in the foreground.
showing the end of the 'forming plate' and it's keeper block. The yellow block was cut with a junior hacksaw and as can be seen by the marks on the green 'button' in front of the plate, this row of buttons had to be cut back and also form a support at the bottom of the plate against the thrust of the ram
the feed chamber with lids removed. The blue block with the white plasticard face acts as a stop for the clayat the top of the chamber.
the chamber with end stop in place
end aperture with ram alongside. The white plasticard allows the ram to slide rather than bump along on the 'pips' - ram shown right way up.
ram and top covers shown in position in feed gap
side view of previous shot.
Those of you that have made it thus far will have noticed evidence of trials having taken place and as with most trials, this one did not go too well - in as much as the clay was used straight out of the pack and the forces required to push it through the former were somewhat larger than I had anticipated, so i added some water to another sample and pushed away, this time, it was too soft and did not 'hold together'. So further experiments with mix ratios are required. Also the clay that I have has a fibre content and this may be playing a part in the procedings, so I shall be trying other clays as well to come up with an acceptable mix solution.
I also need to buy some replacement Lego blocks before the grandaughter's next visit
regards
Mike
Attachments
Dog Star
Western Thunderer
Thank you for the photographs and description. Might the clay need to be "worked" before putting into the extrusion tool? After all, the potter's of old used to have a pug-mill for working the clay before throwing pots.
Like the idea of using Lego! Do you need any clamping force to stop the "tool" from bursting under load?
regards, Graham
Like the idea of using Lego! Do you need any clamping force to stop the "tool" from bursting under load?
regards, Graham
Ressaldar
Western Thunderer
Hi Graham,
you are correct, I should have paid more attention during art classes at school.
The clamping force so far, has been my left hand pushing down over the 'point of impact' whilst pushing the ram with my right hand. The side and end 'loading' of the Lego blocks is very good, so long as you have all of the blocks firmly pressed home, it means that the up thrust is only in this one area so applying downward pressure is thankfully, limited.I did not want to have too much 'body' in the lid and also wanted to keep the 'feed gap' to a reasonable size. Further experimentation should come up with a solution - I hope. There may well be a need for a delivery apron - no more than 5mm deep otherwise the extrusion would not move on to it. This apron could be screwed to the worksurface and the forming tool would be pushed against it and that would give additional thrusting - this time against the ram and should therefore assist with the 'delivery'
cheers
Mike
cheers
Mike
Dog Star
Western Thunderer
it certainly will not be seen on Flog-it that's for sure.
How come you are so sure that Flog-it, or Antiques Railshow for that matter, cannot cope with your multi-colour Bubble car?
