DTI Care & Repair with Bob Part Three

[@MaturePatriot]

Great video John. You, and Bob, are producing a very interesting series on this topic. Excited about the next one.

[@Pnrc-b2u]

That was brilliant, thank you. More please

[@nikond90ful1]

Thanks for the video John,Bob. Very interesting

[@MrLukealbanese]

Fantastic John and Bob, very helpful

Brilliant video as most people would over oil the dti and use the wrong oil.

[@messenger8279]

Lots of valuable info here.

[@paulmorrey733]

Great video Thanks John and Bob - looking forward to part 4

[@RyanWeishalla]

Nice information. Hopefully in a future vid Bob will show how to reclock the second hand.

[@bobdixon6060]

hi yep its in the planning

[@RyanWeishalla]

Thanks, Bob. Looking forward to all of your collaborations with John.

[@tinker5349]

Hi Interesting video, thanks for sharing

[@krazziee2000]

great video, thanks

[@brandontscheschlog]

Great video! I never knew any of this

[@0RDClark]

A good alternative is valve oil for brass instruments. It's one of the lightest oils I've found, doesn't separate and never goes 'sticky'.

[@MaturePatriot]

Valve oil. Has to be light and non sticky.

[@SeanBZA]

Bias spring, or anti backlash spring. Needs a slight bias when the movement is at the one end of travel, so it just keeps the gearing backlash free, but not so much that at the other end it is over wound. The oil is just there to make a thin film in the bush by capillary action, no need to have any more than that volume in the oil well. The oil just has to be non gumming with time, so generally it is a very light pure mineral oil with almost no additives to it. Basically just enough oil to make a slight blue to orange interference pattern around the bush is fine, showing it is a very thin ( nanometers thick) film there, and it will be perfect. It will flow into the bush pores and provide decades of lubrication. If you take it apart use fine crocus paper to polish the shaft ends, both removes the old oil and gets the shaft nicely polished.

[@stephenwagar2663]

welldone bob and mr. boost

[@pearcemachineshop5200]

Great little series this boys, I did send you an email John about some DTI did you receive it. Alan.

[@larryjacobs8956]

Great information guys. What is your thoughts on using synthetic oils?

[@bobdixon6060]

hi never used any so don't no watt it will work like

[@wktodd]

Have you looked at any Mahr millimess (1um) dtis Bob? . I have a couple ,one of which I had to 'clean' due to corrosion , it could probably do with a makeover. Fancy a go at it? Would make a neat video as they are quite different to the typical plunger type.

[@bobdixon6060]

hi just get in touch with john for my email address

[@paulfloyd228]

Thank you gentlemen really useful, a question though if I may, where does Bob buy his instrument oil and what brand please. Regards Paul

[@gordonp6353]

You can get Starrett instrument oil from ebay or Amazon

[@paulfloyd228]

@@gordonp6353 Thanks for taking the time to answer but... I know you can get Starrett oil on eBay & Amazon but it is quite expensive for a small amount, I was more interested to see what Bob used, perhaps a cheaper alternative? Paul

[@gordonp6353]

Paul Floyd; In the Mitutoyo service info they say to use chronometer oil , I use Porpoise jaw brand available from ebay in smaller amounts.

[@paulfloyd228]

@@gordonp6353 Thanks Gordon, do you have a link please? Thanks Paul

[@gordonp6353]

Paul Floyd www.ebay.co.uk/itm/Porpoise-Jaw-Brand-Finest-Quality-Chronometer-Small-and-Medium-Clock-Oil-5ml/263906383357?hash=item3d720bd5fd:g:r8IAAOSwyvBV9mfm

[@ianbertenshaw4350]

I will stick to my compac indicators !

[@richkellow1535]

Hi John, could you let Bob know that I use sewing machine oil......is this wrong?

[@gordonp6353]

I used to use it with no problems, but I now use porpoise jaw chronometer oil (ebay) and fine precision watch oilers.

[@jusb1066]

wd40 it is then, cheers!

[@bobdixon6060]

hi wat ever you have at hand but sewing machine oil is hydroscopic its made so if it gets on fabric it will wash out

[@Steve_Just_Steve]

So what your sayin' is to use plenty of oil on your dee-tay-eyes. Bigga' tha gob betta' tha job as they say. Got it. Thanks.

[@milesthom3201]

Bob, why are you shy about mentioning brand names like 3 in 1 oil?

[@bobdixon6060]

hi well I try not to name the brands as its free ad for them

[@briancollison5319]

I was once told that 3 in 1 is a thick oil with a solvent mixed to make it thin. As the solvent dries out over time the oil goes sticky.