The ball will later joined permanently with loctite 648 to the indicator holder.ĭoing all the drilling and milling work on the indicator holder. Centering with a dial test indicator, the ball is held between soft shimstock, so it does not damage the vice jaws.ĭrilling hardened materials with a carbide drill leaves generally a very clean and close tolerance hole, which is in this case a light press fit on the cylindrical end of the indicator holder. Harddrilling a 10mm bearing ball for the balljoint. With the v-block chuck, the part is setup to machine the cylindrical end that will hold the ball for the balljoint: The 1.2767 I choose for this part machines quite well and is not to hard on tools. Hobbyists often worry about the machineability of toolsteels, but the truth is, that even highly alloyed toolsteels can be machined quite well, but some will wear tools down a bit faster than other. It is machined from 1.2767 toolsteel and will later be hardened to about 45.50HRC:Ĭut to size and machined to the final dimensions. The first part machined will be the combined indicator holder and fine adjustment mechanism. I planed to make two of the indicator stand, so I ordered two magnets from Noga and hardened/ground linear shaft material in 16mm and 12mm diameter.
His design made me want to build something similar and I started to draw something up, first by hand and then in Onshape: The well known Robin Renzetti showed an indicator stand that he built several years on Instagram:
#Flexture lines of the hadn free
The fine adjustment on most of them is also not very good, they are not free of play, some have even backlash and most of them are very coarse to adjust. For example the lack of rigidity, the articulating arm has a very small cross section where it connects to the magnet and that is a weak link. They have a few flaws that make them relatively annoying to use for precision work. Indicator stands – I am not a real fan of most central locking, free adjustable indicator stands. Precision indicator stand Precision indicator stand August 2017
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