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still learning casting and am getting usable parts but wanted to know why the rough texture? sand to wet maybe? im using a 30% bentonite from well drillers mud and 70% play sand. all sifted and hand mulled (that takes for ever and gives your hands a real good work out) this was just scrap...

finally got my first metal shaper. Atlas 7. just got it unloaded and did a small test cut on a scrap cast aluminum ingot last night. still needs some adjusting and the power cord ran properly. right now the motor is hard wired, you plug it in and it runs. looking at the pictures i need to...

question about lost pla casting - often i will use red filler primer or heavy scratch primer to get rid of the print lines and make a smooth looking 3d print. will that stuff burn out with the pla in my mold or will it leave a shell like a sheetrock mud coat might do ? thought about just...

hi, so this is not engine related but just a fun project i wanted to do for my grand kids. a siren whistle. i did not make the 3d stl files, i just downloaded from thingieverse. but for this part the holes are drilled around the perimiter at lets say 45deg angles. and for the life of me i...

was just thinking while mowing the yard about trying my hand at casting using 3d printed pattern. ive done normal sand casting's - very few and not important pieces either. but while my mind was wandering while mowing i was wondering just how much shrinkage really occurs when casting aluminum...

i have an odd ball (for me) die that i need to make a holder for. i usually just do 1 set screw but i though this time i would make a nicer looking holder and also put the 3 set screws like my better quality holders have. my question is what deg should the 3 holes be? i have found a few...

well, google is just not my friend today. i find all the proper drill and clearance drill sizes online but cannot find the proper od for a piece of brass or mild steel to make a few 6ba studs from using a die. i have it for what i call in the US as standard imperial sizes but BA is not very...

Hi, i have 2 - 1" inch milling bits for trade that i got from a trade school auction. they appear to have never been used. they are to large for my machine so they have just been sitting on the shelf for years. what i would like to do is trade them to someone who would be willing to grind me...

not sure if this should be in the "machine modifications" section but here goes. i am making a tool post for metal spinning on my lathe. the type that has the drop in pins accross a flat piece of steel so you can use your "tool" which is a round shaft with a sort of ball nosed end on it. like...

I just received my castings and instructions for Myfordboys traction engine. not that i am experienced with machining castings but to my untrained eye they appear to be very good quality. the blueprints are the type i like with only 1 or 2 parts per page with multiple view points of each part...

i know i have asked several questions about gear cutters in the past but today i stumbled across some information that if i understand correctly will make my life much easier. in particular i only want to work with module 1 for my question because thats about the only thing i use. so if i have...

here is my completed Upshur Vertical single 4 stroke engine. build log here - Werowance attempts Upshur Vertical Single | Home Model Engine Machinist and thanks all for the help last video here - unedited and poor video and a photo or two

i have been complaining for a long time about having to change between lathe tool post and mill vice on my combo lathe / mill machine. every time i have to switch to the mill vice i usually spend a considerable amount of time getting the vice square. it doesnt have tabs on the base to fit the...

someone asked me if I had a 1/2 inch by 11 thread die that I could make a new bolt for an antique grist mill. I have not seen the bolt but I cant find that is even a normal thread. I cant imagine they would have custom made the threads for a weird count in a piece of farm machiniery. so...

so I recently purchased a 3018 cnc engraver and just now getting to play around with it a little. I was wondering if anyone had some recommendations for engraving brass or aluminum name tags or say a zippo lighter for example. it came with pointed d bits for engraving. I guess main...

a friend brought 2 brass cups to me last night from an antique milk shake mixer. these cups are what the glass parts set in and you crank a handle to agitate the milkshakes. at any rate the sheetmetal brass cups are cracked sevierly and someone has tried to solder one back already. so he...

decided on the Upshur Vertical Single as my next engine, bout the plans studied them a few days then got started last night. ordered most of my material yesterday and last night the only thing I found that was close enough was the top plate for the engine. plans called for brass or steel but...

I think I have found the next engine I want to build. the Upshur Vertical Single. I was able to contact Andy and get the drawings. he was very nice and emailed me the plans. - Andy I appreciate that if you are reading. the drawings are good and instruction portion seem to be straight forward...

Longboy, is this your engine and design? if so may I ask is it in imperial measurement and do you have plans that I could purchase?

was looking around for my next engine and I like the sterling 60. what I don't like is that its in metric and I don't have taps or drills etc to easily work in metric. not that there is anything wrong with the metric system. I'm just not tooled up for it and I just really am not that good at...