5 Things to Know Before Buying Large Angle Plates

hallo all

Link to Hengfeng

just new on the forum I would be pleased to take advantage of your experience, or yor specific knowledge, about commercially avaliable adjustable angle plates.

I was looking for one to mount on optimum bf20L, which should be the same as a Champion 20V or one of the most recents amavm25lv

examples are here link and here link, they are also avaliable from other suppliers bur essentially the same tools

The one I would prefer is the second one, I think it is more rigid and it would solve my setup.

I know the discussion about imported goods but I also believe is possible to make them accurate enough, with some effort, and for the price I think is worth it

the BF20 table size is 700x180mm with 3 slots 12mm wide and spaced 62mm.

I need to mount the angle plate with its T-slots perpendicular to the x axis (or its hinge should rotate along the y axis) to use it with my fourth axis rotary head , which is aligned to the x axis, since I have to mill some angled slots otherwise it would' t have been a problem.

the angle plate lower mounting slots should have a distance of about 124mm.

unfortunately from the description of the variuos angle plates this key information is missing and that is the distance of the mounting slots on the milling machine table.

Additional reading:
D16 3D Welding Table: Ultimate Guide for Efficient Fabrication

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they describe the dimensions of the top table of the plate and the spacing of the T slots but not the mounting side which goes on the table of the mill.

I would like to know if anyone owns one of those and which one of the avaliable adjustable angle plates might fit the dimensions of my mill's slots.

Of course I could make some adjustments in case of need but not major ones which might compromise the structure of the angle plate itself

I hope I was clear.

Thank you in advance for any help

Fabio

I found it easy to make one – using a length of round bar (20mm dia +/-) to which I bolted a flat steel plate with a few holes. In use, the bar is held in one of the table slots, or in a V-groove support or a pair of V-blocks. The 'far' end of the plate is supported by a small screw-jack and adjusted to the required angle. This is checked using a dial gauge fixed on an arm under the milling machine head, and this check allows me to adjust the rotation and the jack height to be sure that the plate surface is parallel with one axis and the correct angle to the other axis (either way round to suit the job). A simple calculation relating distance moved horizontally with increase or decrease in height of the gauge saves a lot of faff trying to measure angles in degrees. the last part I made was a steering support for a pre-war Bentley and I was told it was 'better than the original.'

Much of my work involves one-off machining, and as a pensioner I need not look too often at the time spent, so something like this meets my needs at minimal cost. Whether it will work for you, only you can say.

Cheers, Tim

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I don't have any and have had a need on occassion. I picked up a hollow block that was on sale and found it very handy. So now I'm going to get 1 or 2 slotted angle plates and wonder which ones are better, or the pros and cons of each style. I'm kind of leaning towards the open end ones, thinking that will give me more room to use clamps but the webbed end ones look stronger (and they're cheaper). Your thoughts please.
https://www.kbctools.ca/products/WORK HOLDING/ANGLE PLATES/SLOTTED ANGLE PLATES/.aspx
https://www.kbctools.ca/products/WORK HOLDING/ANGLE PLATES/SLOTTED ANGLE PLATES/.aspx No matter what, the slots are seldom in the right place, same goes for tapped holes; I like the webbed ends, but, yes, they do limit clamping; I think perhaps best are plates that are made thicker than the webbed type for increased stability and ridgidity. What offends my eye are angle plates that are Swiss cheesed with holes in random locations for specific jobs, that are unlikely to be repeated; better to make a sub plate that bolts or clamps to the angle plate. It's great to have webbed and drilled/slotted angle plates. The angle plates with slots can be clamped with washers in a variety of angles.
6" wide being ideal for most Kurt style vises. I use the web type when making precise, straight sided boxes. ( I also have plans for a mini sub plate;
1" thick aluminum, 6x6, 10-32 tapped holes., like the one OxTools made. Fits nicely in a Kurt vise and can be easily re surfaced.)

The AP slots and hole spacing vary with models/brands. I'd like to find one that square, L x W x H with slots one side, holes on the other. 6 x6.


All of the angle plates I've seen are either import or Suburban Tool. All on the pricey side.

I use a slotted AP, in a vise, set with a protractor for cutting angles
on small parts. I have no need just yet for a sine plate or bar. The AP's are very handy. Holding parts firm when using a height gage., on a mill table
with bolts, etc... The small Suburban tool plates are reasonably priced and can be found on Ebay for less sometimes. I have a non webbbed 6 X 8 for general setups and layout. I am looking to buy a 4 X 5 or smaller webbed one for machining on my shaper. There a a lot of uses for both. It all depends on if you need to clamp on the inner surface (which I do -a lot)