Advice needed, tool or technique

[George Speed]

Seems Midnight + is a good time to seek help!

Guys n gals,
In the pic below,

What tool and or technique would you advise?

While turning the inside;
I was quite afraid of catches. ( last step)
And I observed that with my smaller tools, the bevel, rather than the cutting edge would contact the surface.

Ok, perhaps not unexpected. I can imagine that cutting edge to center of the work certainly plays a role.
I do have a micro sorby set.
Round nose scraper, tiny gouge.
1/4” skew.

These I sell. So of course a catch is not allowed.

I appreciate any teaching you can offer!

Best regards,
George of the Lathe Jungle.

PS the inside was initially bored with a step drill bit.
I was getting close… chickened out!

 

[Curt Vogt]

Howdy George, I love my Sorby Micro tools but depending on how far you need to go into the form, they will not be sturdy enough to give good results. I have a 1/2" wide scraper that I ground to a round nose negative rake (Double Bevel Scraper) that is much sturdier. The round shape is easy to control and blend cuts inside boxes and such. The thing is that scraper is still 1/4" thick stock and so the underside of the left side will hit easily on the inside of a small diameter like you have there. The solution is to grind away the left underside so it won't hit the project side wall and ruin your cut. While you are at it, go ahead and continue that negative rake down that left side of the tool too. Gentle cuts with a fresh bur on the Negative Rake will help tremendously.

A round nose or square nose with a radius carbide tool could work, but with your inside diameter so small, you would need to heavily modify it by removing lots of supporting metal under the cutter. If you do that, go on Amazon and buy the cheapest round nose carbide tool you can find before you commit to grinding things away that you can't put back. Easy Wood Tools makes a negative rake cutter for their tools but there are other options out there if you look.

The last suggestion is a reminder not to stick sandpaper in there along with a finger to hold it! Broken fingers are no fun. Use a dowell with a slit cut in it to hold the sandpaper or maybe hook and loop would work too. And no... woodworking is not how I know about broken fingers.... soccer ball hit was the worst.

Best of luck!

 

[hughie]

I would make or buy a Oland type hollowing tool, cheap and highly effective. The tips can be made out any HSS steel ie old or broken tap, drill bits, reamers, or buy HSS in short lengths either square or round, some where around 6mm, 5mm etc

Right Hand HSS Tool - Sherline Products

Lathe tools—often referred to as tool bits—are the primary cutting tools used for turning and facing operations on a lathe. The most common type is made from high-speed steel (HSS), which is suitable for machining a wide range of materials, including wood, plastic, aluminum, brass, and steel...

www.sherline.com

HSS Lathe Tool | eBay

Explore a wide range of our HSS Lathe Tool selection. Find top brands, exclusive offers, and unbeatable prices on eBay. Shop now for fast shipping and easy returns!

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Oland tools

Wood Turning Tools: Making the Oland Tool

How to make an Oland tool for wood turning wooden bowls and doing other faceplate work. Easily and inexpensively made in the typical home workshop.

aroundthewoods.com

 

[john lucas]

Gey the Hunter Viceroy cupped carbide tool. Ive been hollowing my boxes for 20 years using a 1/2" spindke gouges cutting front center out. I have been playing a lot with the Hunter Viceroy. Fantastic tool. Almost fool proof to use. Leaves a pretty good finish if you make light passes at the end. I have 2 videos that show this tool. One on turning boxes and one on the Viceroy itself.
Well I cant figure out how to attach those links. Go to YouTube and type in johnlucaswoodturner/boxes. The try johnlucaswoidturner/viceroy

 

[Doug Freeman]

Endgrain, so center to rim cut. I would start with 3/8” shaft spindle gouge. Then there are several options, I think my 1/2” shaft 8.9mm flat top carbide hollower would fit, probably try it next. Also have the same cutter on a 3/8” shaft. Then a 1/2” neg rake scraper for final smoothing. I also have some smaller hss scrapers that might be useful.

A 6mm cupped carbide cutter (like a Hunter) would work as well. I only have a larger cupped carbide, not sure it would fit.

It’s good to have several options available to see what works best. Different woods, and even a different piece of the same wood can behave a bit differently.

 

[George Speed]

good ideas here some a bit pricey lol!

I do have Metal lathe tooling as mentioned above, so I will dig into that tool box drawer first.
Then I like the idea of a cheaper round carbide bit tool, with bevel and possibly bottom side ground for more clearance.

Thanks very much!

 

[Richard Coers]

If you want cheaper, grind a small scraper into a box scraper and scrape on the edge of the tool. Rotate it a little bit CCW and keep the handle higher than the working end to limit catches.

 

[robo hippy]

Looks to be deep enough that it might require hollow form tools. I make a lot of boxes, and the ones that are more than 4 or 5 inches deep, they almost take hollow form tools. Most can be rotated for a shear scrape so you get a cleaner bottom. I use a lot of NRSs/negative rake scrapers in my boxes just because they cut so cleanly, but they are not tools for removing a lot of stock. The Hunter carbide tools should work fine for nice clean cuts.

robo hippy

 

[Doug Freeman]

ome a bit pricey lol!

My carbide insert holder tools are all shop made using mild steel shafts.

 

[Ron Solfest]

I'll add my endorsement for the Hunter tools. I'm not sure of the opening size as it gets down in there but the Badger would be a great tool provided it fits all the way down for you (5/8" bar tapered down to a 3/8" cutter). If not, the straight ornament tool would work but you might be hanging out a ways off of the tool rest for it's 3/8" bar. Hunter tools aren't cheap, but I have yet to talk with anyone that has regretted buying one.

 

[hughie]

good ideas here some a bit pricey lol!

I do have Metal lathe tooling as mentioned above, so I will dig into that tool box drawer first.
Then I like the idea of a cheaper round carbide bit tool, with bevel and possibly bottom side ground for more clearance.

Thanks very much!

Remember carbide tools if you wish to sharpen you will need a diamond wheel set up and the dust is very toxic.

 

[Curt Vogt]

Remember carbide tools if you wish to sharpen you will need a diamond wheel set up and the dust is very toxic.

Thank you Hughie. Yes, very true that carbide dust is bad. To be clear, my idea is to only grind away metal from the supporting bar the carbide bit is mounted on.

 

[Holmes Anderson]

Gey the Hunter Viceroy cupped carbide tool. Ive been hollowing my boxes for 20 years using a 1/2" spindke gouges cutting front center out. I have been playing a lot with the Hunter Viceroy. Fantastic tool. Almost fool proof to use. Leaves a pretty good finish if you make light passes at the end. I have 2 videos that show this tool. One on turning boxes and one on the Viceroy itself.
Well I cant figure out how to attach those links. Go to YouTube and type in johnlucaswoodturner/boxes. The try johnlucaswoidturner/viceroy

Why the Viceroy rather than the Badger?

The Easy Wood Tools full size carbide scrapers may have a longer reach than those Hunter tools if he needs to get down that far. What would be really useful is an EWT Pro square cutter swept inboard for hollowing and squaring up inside corners.